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Finding the Fourth Proportional to 1,702.69, 2,349.96 and 1,039.92

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Solution

The fourth proportional to 1,702.69, 2,349.96 and 1,039.92 is: 1,435.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,702.69 : 2,349.96 = 1,039.92 : x
  2. Step 2: Convert to fraction form
    1,702.69/2,349.96 = 1,039.92/x
  3. Step 3: Cross multiply
    1,702.69x = 2,349.96 × 1,039.92
  4. Step 4: Simplify right side
    1,702.69x = 2,443,770.40
  5. Step 5: Solve for x
    x = 2,443,770.40/1,702.69
  6. Step 6: Final answer
    x = 1,435.24

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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.