Home / 9,140.68-12,613.92-5,161.66

Finding the Fourth Proportional to 9,140.68, 12,613.92 and 5,161.66

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Solution

The fourth proportional to 9,140.68, 12,613.92 and 5,161.66 is: 7,122.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,140.68 : 12,613.92 = 5,161.66 : x
  2. Step 2: Convert to fraction form
    9,140.68/12,613.92 = 5,161.66/x
  3. Step 3: Cross multiply
    9,140.68x = 12,613.92 × 5,161.66
  4. Step 4: Simplify right side
    9,140.68x = 65,108,766.31
  5. Step 5: Solve for x
    x = 65,108,766.31/9,140.68
  6. Step 6: Final answer
    x = 7,122.97

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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.