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Finding the Fourth Proportional to 2,681.52, 3,702 and 1,687.04

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Solution

The fourth proportional to 2,681.52, 3,702 and 1,687.04 is: 2,329.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,681.52 : 3,702 = 1,687.04 : x
  2. Step 2: Convert to fraction form
    2,681.52/3,702 = 1,687.04/x
  3. Step 3: Cross multiply
    2,681.52x = 3,702 × 1,687.04
  4. Step 4: Simplify right side
    2,681.52x = 6,245,422.08
  5. Step 5: Solve for x
    x = 6,245,422.08/2,681.52
  6. Step 6: Final answer
    x = 2,329.06

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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.