Home / 3,115.38-4,672.27-923.61

Finding the Fourth Proportional to 3,115.38, 4,672.27 and 923.61

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Solution

The fourth proportional to 3,115.38, 4,672.27 and 923.61 is: 1,385.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,115.38 : 4,672.27 = 923.61 : x
  2. Step 2: Convert to fraction form
    3,115.38/4,672.27 = 923.61/x
  3. Step 3: Cross multiply
    3,115.38x = 4,672.27 × 923.61
  4. Step 4: Simplify right side
    3,115.38x = 4,315,355.29
  5. Step 5: Solve for x
    x = 4,315,355.29/3,115.38
  6. Step 6: Final answer
    x = 1,385.18

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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.