Home / 8,372.34-11,545.08-5,385.78

Finding the Fourth Proportional to 8,372.34, 11,545.08 and 5,385.78

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Solution

The fourth proportional to 8,372.34, 11,545.08 and 5,385.78 is: 7,426.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,372.34 : 11,545.08 = 5,385.78 : x
  2. Step 2: Convert to fraction form
    8,372.34/11,545.08 = 5,385.78/x
  3. Step 3: Cross multiply
    8,372.34x = 11,545.08 × 5,385.78
  4. Step 4: Simplify right side
    8,372.34x = 62,179,260.96
  5. Step 5: Solve for x
    x = 62,179,260.96/8,372.34
  6. Step 6: Final answer
    x = 7,426.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.