Home / 5,138.43-7,090.62-3,148.71

Finding the Fourth Proportional to 5,138.43, 7,090.62 and 3,148.71

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Solution

The fourth proportional to 5,138.43, 7,090.62 and 3,148.71 is: 4,344.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,138.43 : 7,090.62 = 3,148.71 : x
  2. Step 2: Convert to fraction form
    5,138.43/7,090.62 = 3,148.71/x
  3. Step 3: Cross multiply
    5,138.43x = 7,090.62 × 3,148.71
  4. Step 4: Simplify right side
    5,138.43x = 22,326,306.10
  5. Step 5: Solve for x
    x = 22,326,306.10/5,138.43
  6. Step 6: Final answer
    x = 4,344.97

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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.