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Finding the Fourth Proportional to 2,098.80, 3,148.17 and 559.80

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Solution

The fourth proportional to 2,098.80, 3,148.17 and 559.80 is: 839.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,098.80 : 3,148.17 = 559.80 : x
  2. Step 2: Convert to fraction form
    2,098.80/3,148.17 = 559.80/x
  3. Step 3: Cross multiply
    2,098.80x = 3,148.17 × 559.80
  4. Step 4: Simplify right side
    2,098.80x = 1,762,345.57
  5. Step 5: Solve for x
    x = 1,762,345.57/2,098.80
  6. Step 6: Final answer
    x = 839.69

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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.