Home / 10,660.28-15,990.64-3,264.80

Finding the Fourth Proportional to 10,660.28, 15,990.64 and 3,264.80

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Solution

The fourth proportional to 10,660.28, 15,990.64 and 3,264.80 is: 4,897.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,660.28 : 15,990.64 = 3,264.80 : x
  2. Step 2: Convert to fraction form
    10,660.28/15,990.64 = 3,264.80/x
  3. Step 3: Cross multiply
    10,660.28x = 15,990.64 × 3,264.80
  4. Step 4: Simplify right side
    10,660.28x = 52,206,241.47
  5. Step 5: Solve for x
    x = 52,206,241.47/10,660.28
  6. Step 6: Final answer
    x = 4,897.27

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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.