Home / 5,239.80-7,862.09-2,279.16

Finding the Fourth Proportional to 5,239.80, 7,862.09 and 2,279.16

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Solution

The fourth proportional to 5,239.80, 7,862.09 and 2,279.16 is: 3,419.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,239.80 : 7,862.09 = 2,279.16 : x
  2. Step 2: Convert to fraction form
    5,239.80/7,862.09 = 2,279.16/x
  3. Step 3: Cross multiply
    5,239.80x = 7,862.09 × 2,279.16
  4. Step 4: Simplify right side
    5,239.80x = 17,918,949.65
  5. Step 5: Solve for x
    x = 17,918,949.65/5,239.80
  6. Step 6: Final answer
    x = 3,419.78

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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.