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Finding the Fourth Proportional to 1,641.88, 2,266.17 and 1,082.45

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Solution

The fourth proportional to 1,641.88, 2,266.17 and 1,082.45 is: 1,494.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,641.88 : 2,266.17 = 1,082.45 : x
  2. Step 2: Convert to fraction form
    1,641.88/2,266.17 = 1,082.45/x
  3. Step 3: Cross multiply
    1,641.88x = 2,266.17 × 1,082.45
  4. Step 4: Simplify right side
    1,641.88x = 2,453,001.68
  5. Step 5: Solve for x
    x = 2,453,001.68/1,641.88
  6. Step 6: Final answer
    x = 1,494.02

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.