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Finding the Fourth Proportional to 5,374.76, 8,061.22 and 1,478.25

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Solution

The fourth proportional to 5,374.76, 8,061.22 and 1,478.25 is: 2,217.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,374.76 : 8,061.22 = 1,478.25 : x
  2. Step 2: Convert to fraction form
    5,374.76/8,061.22 = 1,478.25/x
  3. Step 3: Cross multiply
    5,374.76x = 8,061.22 × 1,478.25
  4. Step 4: Simplify right side
    5,374.76x = 11,916,500.31
  5. Step 5: Solve for x
    x = 11,916,500.31/5,374.76
  6. Step 6: Final answer
    x = 2,217.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.