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Finding the Fourth Proportional to 1,642.97, 2,265.77 and 1,082.47

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Solution

The fourth proportional to 1,642.97, 2,265.77 and 1,082.47 is: 1,492.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,642.97 : 2,265.77 = 1,082.47 : x
  2. Step 2: Convert to fraction form
    1,642.97/2,265.77 = 1,082.47/x
  3. Step 3: Cross multiply
    1,642.97x = 2,265.77 × 1,082.47
  4. Step 4: Simplify right side
    1,642.97x = 2,452,625.09
  5. Step 5: Solve for x
    x = 2,452,625.09/1,642.97
  6. Step 6: Final answer
    x = 1,492.80

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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.