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Finding the Fourth Proportional to 6,248.79, 8,624.30 and 3,891.69

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Solution

The fourth proportional to 6,248.79, 8,624.30 and 3,891.69 is: 5,371.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,248.79 : 8,624.30 = 3,891.69 : x
  2. Step 2: Convert to fraction form
    6,248.79/8,624.30 = 3,891.69/x
  3. Step 3: Cross multiply
    6,248.79x = 8,624.30 × 3,891.69
  4. Step 4: Simplify right side
    6,248.79x = 33,563,082.61
  5. Step 5: Solve for x
    x = 33,563,082.61/6,248.79
  6. Step 6: Final answer
    x = 5,371.13

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Half scale
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Double scale
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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.