Home / 3,126.38-4,689.72-935.12

Finding the Fourth Proportional to 3,126.38, 4,689.72 and 935.12

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Solution

The fourth proportional to 3,126.38, 4,689.72 and 935.12 is: 1,402.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,126.38 : 4,689.72 = 935.12 : x
  2. Step 2: Convert to fraction form
    3,126.38/4,689.72 = 935.12/x
  3. Step 3: Cross multiply
    3,126.38x = 4,689.72 × 935.12
  4. Step 4: Simplify right side
    3,126.38x = 4,385,462.69
  5. Step 5: Solve for x
    x = 4,385,462.69/3,126.38
  6. Step 6: Final answer
    x = 1,402.73

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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.