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Finding the Fourth Proportional to 4,891.57, 7,319.17 and 2,918.26

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Solution

The fourth proportional to 4,891.57, 7,319.17 and 2,918.26 is: 4,366.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,891.57 : 7,319.17 = 2,918.26 : x
  2. Step 2: Convert to fraction form
    4,891.57/7,319.17 = 2,918.26/x
  3. Step 3: Cross multiply
    4,891.57x = 7,319.17 × 2,918.26
  4. Step 4: Simplify right side
    4,891.57x = 21,359,241.04
  5. Step 5: Solve for x
    x = 21,359,241.04/4,891.57
  6. Step 6: Final answer
    x = 4,366.54

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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.