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Finding the Fourth Proportional to 6,757.79, 10,132.48 and 2,811.80

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Solution

The fourth proportional to 6,757.79, 10,132.48 and 2,811.80 is: 4,215.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,757.79 : 10,132.48 = 2,811.80 : x
  2. Step 2: Convert to fraction form
    6,757.79/10,132.48 = 2,811.80/x
  3. Step 3: Cross multiply
    6,757.79x = 10,132.48 × 2,811.80
  4. Step 4: Simplify right side
    6,757.79x = 28,490,525.57
  5. Step 5: Solve for x
    x = 28,490,525.57/6,757.79
  6. Step 6: Final answer
    x = 4,215.96

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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.