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Finding the Fourth Proportional to 5,011.66, 6,915.50 and 2,886.76

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Solution

The fourth proportional to 5,011.66, 6,915.50 and 2,886.76 is: 3,983.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,011.66 : 6,915.50 = 2,886.76 : x
  2. Step 2: Convert to fraction form
    5,011.66/6,915.50 = 2,886.76/x
  3. Step 3: Cross multiply
    5,011.66x = 6,915.50 × 2,886.76
  4. Step 4: Simplify right side
    5,011.66x = 19,963,388.78
  5. Step 5: Solve for x
    x = 19,963,388.78/5,011.66
  6. Step 6: Final answer
    x = 3,983.39

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Find fourth proportional to 2,505.83, 3,457.75 and 1,443.38
Half scale
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Double scale
Find fourth proportional to 5,012.66, 6,916.88 and 2,887.76
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.