Home / 9,140.29-12,613.62-5,161.44

Finding the Fourth Proportional to 9,140.29, 12,613.62 and 5,161.44

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Solution

The fourth proportional to 9,140.29, 12,613.62 and 5,161.44 is: 7,122.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,140.29 : 12,613.62 = 5,161.44 : x
  2. Step 2: Convert to fraction form
    9,140.29/12,613.62 = 5,161.44/x
  3. Step 3: Cross multiply
    9,140.29x = 12,613.62 × 5,161.44
  4. Step 4: Simplify right side
    9,140.29x = 65,104,353.94
  5. Step 5: Solve for x
    x = 65,104,353.94/9,140.29
  6. Step 6: Final answer
    x = 7,122.79

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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.