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Finding the Fourth Proportional to 2,468.53, 3,702.09 and 689.18

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Solution

The fourth proportional to 2,468.53, 3,702.09 and 689.18 is: 1,033.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,468.53 : 3,702.09 = 689.18 : x
  2. Step 2: Convert to fraction form
    2,468.53/3,702.09 = 689.18/x
  3. Step 3: Cross multiply
    2,468.53x = 3,702.09 × 689.18
  4. Step 4: Simplify right side
    2,468.53x = 2,551,406.39
  5. Step 5: Solve for x
    x = 2,551,406.39/2,468.53
  6. Step 6: Final answer
    x = 1,033.57

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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.