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Finding the Fourth Proportional to 5,388.47, 7,437.03 and 3,397.49

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Solution

The fourth proportional to 5,388.47, 7,437.03 and 3,397.49 is: 4,689.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,388.47 : 7,437.03 = 3,397.49 : x
  2. Step 2: Convert to fraction form
    5,388.47/7,437.03 = 3,397.49/x
  3. Step 3: Cross multiply
    5,388.47x = 7,437.03 × 3,397.49
  4. Step 4: Simplify right side
    5,388.47x = 25,267,235.05
  5. Step 5: Solve for x
    x = 25,267,235.05/5,388.47
  6. Step 6: Final answer
    x = 4,689.13

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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.