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Finding the Fourth Proportional to 2,042.39, 3,063.75 and 655.91

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Solution

The fourth proportional to 2,042.39, 3,063.75 and 655.91 is: 983.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,042.39 : 3,063.75 = 655.91 : x
  2. Step 2: Convert to fraction form
    2,042.39/3,063.75 = 655.91/x
  3. Step 3: Cross multiply
    2,042.39x = 3,063.75 × 655.91
  4. Step 4: Simplify right side
    2,042.39x = 2,009,544.26
  5. Step 5: Solve for x
    x = 2,009,544.26/2,042.39
  6. Step 6: Final answer
    x = 983.92

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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.