Home / 5,251.60-7,876.76-1,356.28

Finding the Fourth Proportional to 5,251.60, 7,876.76 and 1,356.28

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Solution

The fourth proportional to 5,251.60, 7,876.76 and 1,356.28 is: 2,034.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,251.60 : 7,876.76 = 1,356.28 : x
  2. Step 2: Convert to fraction form
    5,251.60/7,876.76 = 1,356.28/x
  3. Step 3: Cross multiply
    5,251.60x = 7,876.76 × 1,356.28
  4. Step 4: Simplify right side
    5,251.60x = 10,683,092.05
  5. Step 5: Solve for x
    x = 10,683,092.05/5,251.60
  6. Step 6: Final answer
    x = 2,034.25

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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.