Home / 3,760.28-5,639.32-1,127.68

Finding the Fourth Proportional to 3,760.28, 5,639.32 and 1,127.68

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Solution

The fourth proportional to 3,760.28, 5,639.32 and 1,127.68 is: 1,691.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,760.28 : 5,639.32 = 1,127.68 : x
  2. Step 2: Convert to fraction form
    3,760.28/5,639.32 = 1,127.68/x
  3. Step 3: Cross multiply
    3,760.28x = 5,639.32 × 1,127.68
  4. Step 4: Simplify right side
    3,760.28x = 6,359,351.55
  5. Step 5: Solve for x
    x = 6,359,351.55/3,760.28
  6. Step 6: Final answer
    x = 1,691.19

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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.