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Finding the Fourth Proportional to 2,543.97, 3,510.65 and 1,424.90

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Solution

The fourth proportional to 2,543.97, 3,510.65 and 1,424.90 is: 1,966.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,543.97 : 3,510.65 = 1,424.90 : x
  2. Step 2: Convert to fraction form
    2,543.97/3,510.65 = 1,424.90/x
  3. Step 3: Cross multiply
    2,543.97x = 3,510.65 × 1,424.90
  4. Step 4: Simplify right side
    2,543.97x = 5,002,325.19
  5. Step 5: Solve for x
    x = 5,002,325.19/2,543.97
  6. Step 6: Final answer
    x = 1,966.35

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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.