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Finding the Fourth Proportional to 5,398.50, 7,449.12 and 3,040.59

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Solution

The fourth proportional to 5,398.50, 7,449.12 and 3,040.59 is: 4,195.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,398.50 : 7,449.12 = 3,040.59 : x
  2. Step 2: Convert to fraction form
    5,398.50/7,449.12 = 3,040.59/x
  3. Step 3: Cross multiply
    5,398.50x = 7,449.12 × 3,040.59
  4. Step 4: Simplify right side
    5,398.50x = 22,649,719.78
  5. Step 5: Solve for x
    x = 22,649,719.78/5,398.50
  6. Step 6: Final answer
    x = 4,195.56

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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.