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Finding the Fourth Proportional to 1,718.73, 2,581.14 and 1,280.12

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Solution

The fourth proportional to 1,718.73, 2,581.14 and 1,280.12 is: 1,922.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,718.73 : 2,581.14 = 1,280.12 : x
  2. Step 2: Convert to fraction form
    1,718.73/2,581.14 = 1,280.12/x
  3. Step 3: Cross multiply
    1,718.73x = 2,581.14 × 1,280.12
  4. Step 4: Simplify right side
    1,718.73x = 3,304,156.03
  5. Step 5: Solve for x
    x = 3,304,156.03/1,718.73
  6. Step 6: Final answer
    x = 1,922.44

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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.