Home / 9,340.88-12,890.41-5,149.13

Finding the Fourth Proportional to 9,340.88, 12,890.41 and 5,149.13

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Solution

The fourth proportional to 9,340.88, 12,890.41 and 5,149.13 is: 7,105.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,340.88 : 12,890.41 = 5,149.13 : x
  2. Step 2: Convert to fraction form
    9,340.88/12,890.41 = 5,149.13/x
  3. Step 3: Cross multiply
    9,340.88x = 12,890.41 × 5,149.13
  4. Step 4: Simplify right side
    9,340.88x = 66,374,319.52
  5. Step 5: Solve for x
    x = 66,374,319.52/9,340.88
  6. Step 6: Final answer
    x = 7,105.79

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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.