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Finding the Fourth Proportional to 10,660.39, 15,990.71 and 3,264.92

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Solution

The fourth proportional to 10,660.39, 15,990.71 and 3,264.92 is: 4,897.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,660.39 : 15,990.71 = 3,264.92 : x
  2. Step 2: Convert to fraction form
    10,660.39/15,990.71 = 3,264.92/x
  3. Step 3: Cross multiply
    10,660.39x = 15,990.71 × 3,264.92
  4. Step 4: Simplify right side
    10,660.39x = 52,208,388.89
  5. Step 5: Solve for x
    x = 52,208,388.89/10,660.39
  6. Step 6: Final answer
    x = 4,897.42

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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.