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Finding the Third Proportional to 3,990.09 and 6,124.78

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Solution

The third proportional to 3,990.09 and 6,124.78 is: 9,401.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,990.09 : 6,124.78 = 6,124.78 : x
  2. Step 2: Convert to fraction form
    3,990.09/6,124.78 = 6,124.78/x
  3. Step 3: Cross multiply
    3,990.09x = 6,124.78 × 6,124.78
  4. Step 4: Simplify right side
    3,990.09x = 37,512,945.36
  5. Step 5: Solve for x
    x = 37,512,945.36/3,990.09
  6. Step 6: Final answer
    x = 9,401.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.