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Finding the Fourth Proportional to 2,472.15, 3,708.48 and 828.87

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Solution

The fourth proportional to 2,472.15, 3,708.48 and 828.87 is: 1,243.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,472.15 : 3,708.48 = 828.87 : x
  2. Step 2: Convert to fraction form
    2,472.15/3,708.48 = 828.87/x
  3. Step 3: Cross multiply
    2,472.15x = 3,708.48 × 828.87
  4. Step 4: Simplify right side
    2,472.15x = 3,073,837.02
  5. Step 5: Solve for x
    x = 3,073,837.02/2,472.15
  6. Step 6: Final answer
    x = 1,243.38

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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.