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Finding the Third Proportional to 3,415.88 and 5,123.88

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Solution

The third proportional to 3,415.88 and 5,123.88 is: 7,685.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,415.88 : 5,123.88 = 5,123.88 : x
  2. Step 2: Convert to fraction form
    3,415.88/5,123.88 = 5,123.88/x
  3. Step 3: Cross multiply
    3,415.88x = 5,123.88 × 5,123.88
  4. Step 4: Simplify right side
    3,415.88x = 26,254,095.02
  5. Step 5: Solve for x
    x = 26,254,095.02/3,415.88
  6. Step 6: Final answer
    x = 7,685.91

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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.