Home / 9,149.22-12,625.47-5,115.78

Finding the Fourth Proportional to 9,149.22, 12,625.47 and 5,115.78

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Solution

The fourth proportional to 9,149.22, 12,625.47 and 5,115.78 is: 7,059.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,149.22 : 12,625.47 = 5,115.78 : x
  2. Step 2: Convert to fraction form
    9,149.22/12,625.47 = 5,115.78/x
  3. Step 3: Cross multiply
    9,149.22x = 12,625.47 × 5,115.78
  4. Step 4: Simplify right side
    9,149.22x = 64,589,126.92
  5. Step 5: Solve for x
    x = 64,589,126.92/9,149.22
  6. Step 6: Final answer
    x = 7,059.52

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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.