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Finding the Fourth Proportional to 5,164.80, 7,747.92 and 1,877.52

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Solution

The fourth proportional to 5,164.80, 7,747.92 and 1,877.52 is: 2,816.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,164.80 : 7,747.92 = 1,877.52 : x
  2. Step 2: Convert to fraction form
    5,164.80/7,747.92 = 1,877.52/x
  3. Step 3: Cross multiply
    5,164.80x = 7,747.92 × 1,877.52
  4. Step 4: Simplify right side
    5,164.80x = 14,546,874.76
  5. Step 5: Solve for x
    x = 14,546,874.76/5,164.80
  6. Step 6: Final answer
    x = 2,816.54

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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.