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Finding the Fourth Proportional to 6,678.59, 10,020.20 and 2,519.79

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Solution

The fourth proportional to 6,678.59, 10,020.20 and 2,519.79 is: 3,780.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,678.59 : 10,020.20 = 2,519.79 : x
  2. Step 2: Convert to fraction form
    6,678.59/10,020.20 = 2,519.79/x
  3. Step 3: Cross multiply
    6,678.59x = 10,020.20 × 2,519.79
  4. Step 4: Simplify right side
    6,678.59x = 25,248,787.16
  5. Step 5: Solve for x
    x = 25,248,787.16/6,678.59
  6. Step 6: Final answer
    x = 3,780.56

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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.