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Finding the Fourth Proportional to 5,279.18, 7,916.11 and 1,767.97

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Solution

The fourth proportional to 5,279.18, 7,916.11 and 1,767.97 is: 2,651.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,279.18 : 7,916.11 = 1,767.97 : x
  2. Step 2: Convert to fraction form
    5,279.18/7,916.11 = 1,767.97/x
  3. Step 3: Cross multiply
    5,279.18x = 7,916.11 × 1,767.97
  4. Step 4: Simplify right side
    5,279.18x = 13,995,445.00
  5. Step 5: Solve for x
    x = 13,995,445.00/5,279.18
  6. Step 6: Final answer
    x = 2,651.06

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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.