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Finding the Fourth Proportional to 2,471.84, 3,411.08 and 1,352.78

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Solution

The fourth proportional to 2,471.84, 3,411.08 and 1,352.78 is: 1,866.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,471.84 : 3,411.08 = 1,352.78 : x
  2. Step 2: Convert to fraction form
    2,471.84/3,411.08 = 1,352.78/x
  3. Step 3: Cross multiply
    2,471.84x = 3,411.08 × 1,352.78
  4. Step 4: Simplify right side
    2,471.84x = 4,614,422.06
  5. Step 5: Solve for x
    x = 4,614,422.06/2,471.84
  6. Step 6: Final answer
    x = 1,866.80

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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.