Home / 3,931.20-5,895.12-1,332.96

Finding the Fourth Proportional to 3,931.20, 5,895.12 and 1,332.96

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Solution

The fourth proportional to 3,931.20, 5,895.12 and 1,332.96 is: 1,998.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,931.20 : 5,895.12 = 1,332.96 : x
  2. Step 2: Convert to fraction form
    3,931.20/5,895.12 = 1,332.96/x
  3. Step 3: Cross multiply
    3,931.20x = 5,895.12 × 1,332.96
  4. Step 4: Simplify right side
    3,931.20x = 7,857,959.16
  5. Step 5: Solve for x
    x = 7,857,959.16/3,931.20
  6. Step 6: Final answer
    x = 1,998.87

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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.