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Finding the Third Proportional to 3,142 and 4,617.50

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Solution

The third proportional to 3,142 and 4,617.50 is: 6,785.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,142 : 4,617.50 = 4,617.50 : x
  2. Step 2: Convert to fraction form
    3,142/4,617.50 = 4,617.50/x
  3. Step 3: Cross multiply
    3,142x = 4,617.50 × 4,617.50
  4. Step 4: Simplify right side
    3,142x = 21,321,306.25
  5. Step 5: Solve for x
    x = 21,321,306.25/3,142
  6. Step 6: Final answer
    x = 6,785.90

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.