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Finding the Fourth Proportional to 5,279.50, 7,921.14 and 1,817.02

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Solution

The fourth proportional to 5,279.50, 7,921.14 and 1,817.02 is: 2,726.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,279.50 : 7,921.14 = 1,817.02 : x
  2. Step 2: Convert to fraction form
    5,279.50/7,921.14 = 1,817.02/x
  3. Step 3: Cross multiply
    5,279.50x = 7,921.14 × 1,817.02
  4. Step 4: Simplify right side
    5,279.50x = 14,392,869.80
  5. Step 5: Solve for x
    x = 14,392,869.80/5,279.50
  6. Step 6: Final answer
    x = 2,726.18

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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.