Home / 9,140.32-12,613.68-5,161.48

Finding the Fourth Proportional to 9,140.32, 12,613.68 and 5,161.48

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Solution

The fourth proportional to 9,140.32, 12,613.68 and 5,161.48 is: 7,122.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,140.32 : 12,613.68 = 5,161.48 : x
  2. Step 2: Convert to fraction form
    9,140.32/12,613.68 = 5,161.48/x
  3. Step 3: Cross multiply
    9,140.32x = 12,613.68 × 5,161.48
  4. Step 4: Simplify right side
    9,140.32x = 65,105,257.05
  5. Step 5: Solve for x
    x = 65,105,257.05/9,140.32
  6. Step 6: Final answer
    x = 7,122.86

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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.