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Finding the Fourth Proportional to 5,432.78, 7,497.21 and 2,948.78

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Solution

The fourth proportional to 5,432.78, 7,497.21 and 2,948.78 is: 4,069.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,432.78 : 7,497.21 = 2,948.78 : x
  2. Step 2: Convert to fraction form
    5,432.78/7,497.21 = 2,948.78/x
  3. Step 3: Cross multiply
    5,432.78x = 7,497.21 × 2,948.78
  4. Step 4: Simplify right side
    5,432.78x = 22,107,622.90
  5. Step 5: Solve for x
    x = 22,107,622.90/5,432.78
  6. Step 6: Final answer
    x = 4,069.30

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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.