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Finding the Third Proportional to 1,042.50 and 2,319

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Solution

The third proportional to 1,042.50 and 2,319 is: 5,158.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,042.50 : 2,319 = 2,319 : x
  2. Step 2: Convert to fraction form
    1,042.50/2,319 = 2,319/x
  3. Step 3: Cross multiply
    1,042.50x = 2,319 × 2,319
  4. Step 4: Simplify right side
    1,042.50x = 5,377,761
  5. Step 5: Solve for x
    x = 5,377,761/1,042.50
  6. Step 6: Final answer
    x = 5,158.52

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Why These Related Problems?

These problems maintain the same ratio (2.22) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.