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Finding the Fourth Proportional to 2,344.68, 3,516.78 and 613.31

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Solution

The fourth proportional to 2,344.68, 3,516.78 and 613.31 is: 919.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,344.68 : 3,516.78 = 613.31 : x
  2. Step 2: Convert to fraction form
    2,344.68/3,516.78 = 613.31/x
  3. Step 3: Cross multiply
    2,344.68x = 3,516.78 × 613.31
  4. Step 4: Simplify right side
    2,344.68x = 2,156,858.76
  5. Step 5: Solve for x
    x = 2,156,858.76/2,344.68
  6. Step 6: Final answer
    x = 919.89

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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.