Home / 8,391.20-11,575.30-5,203.42

Finding the Fourth Proportional to 8,391.20, 11,575.30 and 5,203.42

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Solution

The fourth proportional to 8,391.20, 11,575.30 and 5,203.42 is: 7,177.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,391.20 : 11,575.30 = 5,203.42 : x
  2. Step 2: Convert to fraction form
    8,391.20/11,575.30 = 5,203.42/x
  3. Step 3: Cross multiply
    8,391.20x = 11,575.30 × 5,203.42
  4. Step 4: Simplify right side
    8,391.20x = 60,231,147.53
  5. Step 5: Solve for x
    x = 60,231,147.53/8,391.20
  6. Step 6: Final answer
    x = 7,177.89

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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.