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Finding the Fourth Proportional to 1,702.56, 2,349.71 and 1,039.80

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Solution

The fourth proportional to 1,702.56, 2,349.71 and 1,039.80 is: 1,435.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,702.56 : 2,349.71 = 1,039.80 : x
  2. Step 2: Convert to fraction form
    1,702.56/2,349.71 = 1,039.80/x
  3. Step 3: Cross multiply
    1,702.56x = 2,349.71 × 1,039.80
  4. Step 4: Simplify right side
    1,702.56x = 2,443,228.46
  5. Step 5: Solve for x
    x = 2,443,228.46/1,702.56
  6. Step 6: Final answer
    x = 1,435.03

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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.