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Finding the Fourth Proportional to 5,376.78, 8,060.28 and 2,774.28

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Solution

The fourth proportional to 5,376.78, 8,060.28 and 2,774.28 is: 4,158.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,376.78 : 8,060.28 = 2,774.28 : x
  2. Step 2: Convert to fraction form
    5,376.78/8,060.28 = 2,774.28/x
  3. Step 3: Cross multiply
    5,376.78x = 8,060.28 × 2,774.28
  4. Step 4: Simplify right side
    5,376.78x = 22,361,473.60
  5. Step 5: Solve for x
    x = 22,361,473.60/5,376.78
  6. Step 6: Final answer
    x = 4,158.90

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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.