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Finding the Fourth Proportional to 3,079.35, 4,618.17 and 887.49

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Solution

The fourth proportional to 3,079.35, 4,618.17 and 887.49 is: 1,330.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,079.35 : 4,618.17 = 887.49 : x
  2. Step 2: Convert to fraction form
    3,079.35/4,618.17 = 887.49/x
  3. Step 3: Cross multiply
    3,079.35x = 4,618.17 × 887.49
  4. Step 4: Simplify right side
    3,079.35x = 4,098,579.69
  5. Step 5: Solve for x
    x = 4,098,579.69/3,079.35
  6. Step 6: Final answer
    x = 1,330.99

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.