Home / 10,522.68-15,781.24-3,125.40

Finding the Fourth Proportional to 10,522.68, 15,781.24 and 3,125.40

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Solution

The fourth proportional to 10,522.68, 15,781.24 and 3,125.40 is: 4,687.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,522.68 : 15,781.24 = 3,125.40 : x
  2. Step 2: Convert to fraction form
    10,522.68/15,781.24 = 3,125.40/x
  3. Step 3: Cross multiply
    10,522.68x = 15,781.24 × 3,125.40
  4. Step 4: Simplify right side
    10,522.68x = 49,322,687.50
  5. Step 5: Solve for x
    x = 49,322,687.50/10,522.68
  6. Step 6: Final answer
    x = 4,687.27

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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.