Home / 9,057.33-12,488.45-8,385.57

Finding the Fourth Proportional to 9,057.33, 12,488.45 and 8,385.57

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Solution

The fourth proportional to 9,057.33, 12,488.45 and 8,385.57 is: 11,562.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,057.33 : 12,488.45 = 8,385.57 : x
  2. Step 2: Convert to fraction form
    9,057.33/12,488.45 = 8,385.57/x
  3. Step 3: Cross multiply
    9,057.33x = 12,488.45 × 8,385.57
  4. Step 4: Simplify right side
    9,057.33x = 104,722,729.74
  5. Step 5: Solve for x
    x = 104,722,729.74/9,057.33
  6. Step 6: Final answer
    x = 11,562.21

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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.