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Finding the Fourth Proportional to 1,841.61, 2,760.75 and 671.34

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Solution

The fourth proportional to 1,841.61, 2,760.75 and 671.34 is: 1,006.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,841.61 : 2,760.75 = 671.34 : x
  2. Step 2: Convert to fraction form
    1,841.61/2,760.75 = 671.34/x
  3. Step 3: Cross multiply
    1,841.61x = 2,760.75 × 671.34
  4. Step 4: Simplify right side
    1,841.61x = 1,853,401.91
  5. Step 5: Solve for x
    x = 1,853,401.91/1,841.61
  6. Step 6: Final answer
    x = 1,006.40

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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.