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Finding the Fourth Proportional to 2,425.39, 3,636.02 and 864.92

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Solution

The fourth proportional to 2,425.39, 3,636.02 and 864.92 is: 1,296.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,425.39 : 3,636.02 = 864.92 : x
  2. Step 2: Convert to fraction form
    2,425.39/3,636.02 = 864.92/x
  3. Step 3: Cross multiply
    2,425.39x = 3,636.02 × 864.92
  4. Step 4: Simplify right side
    2,425.39x = 3,144,877.67
  5. Step 5: Solve for x
    x = 3,144,877.67/2,425.39
  6. Step 6: Final answer
    x = 1,296.65

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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.