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Finding the Fourth Proportional to 10,660.47, 15,990.71 and 3,264.99

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Solution

The fourth proportional to 10,660.47, 15,990.71 and 3,264.99 is: 4,897.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,660.47 : 15,990.71 = 3,264.99 : x
  2. Step 2: Convert to fraction form
    10,660.47/15,990.71 = 3,264.99/x
  3. Step 3: Cross multiply
    10,660.47x = 15,990.71 × 3,264.99
  4. Step 4: Simplify right side
    10,660.47x = 52,209,491.92
  5. Step 5: Solve for x
    x = 52,209,491.92/10,660.47
  6. Step 6: Final answer
    x = 4,897.49

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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.