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Finding the Third Proportional to 2,587.78 and 4,035.45

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Solution

The third proportional to 2,587.78 and 4,035.45 is: 6,292.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,587.78 : 4,035.45 = 4,035.45 : x
  2. Step 2: Convert to fraction form
    2,587.78/4,035.45 = 4,035.45/x
  3. Step 3: Cross multiply
    2,587.78x = 4,035.45 × 4,035.45
  4. Step 4: Simplify right side
    2,587.78x = 16,284,818.87
  5. Step 5: Solve for x
    x = 16,284,818.87/2,587.78
  6. Step 6: Final answer
    x = 6,292.97

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.