Home / 5,138.48-7,098.36-4,089.20

Finding the Fourth Proportional to 5,138.48, 7,098.36 and 4,089.20

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Solution

The fourth proportional to 5,138.48, 7,098.36 and 4,089.20 is: 5,648.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,138.48 : 7,098.36 = 4,089.20 : x
  2. Step 2: Convert to fraction form
    5,138.48/7,098.36 = 4,089.20/x
  3. Step 3: Cross multiply
    5,138.48x = 7,098.36 × 4,089.20
  4. Step 4: Simplify right side
    5,138.48x = 29,026,613.71
  5. Step 5: Solve for x
    x = 29,026,613.71/5,138.48
  6. Step 6: Final answer
    x = 5,648.87

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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.