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Finding the Fourth Proportional to 2,472.12, 3,708.57 and 828.28

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Solution

The fourth proportional to 2,472.12, 3,708.57 and 828.28 is: 1,242.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,472.12 : 3,708.57 = 828.28 : x
  2. Step 2: Convert to fraction form
    2,472.12/3,708.57 = 828.28/x
  3. Step 3: Cross multiply
    2,472.12x = 3,708.57 × 828.28
  4. Step 4: Simplify right side
    2,472.12x = 3,071,734.36
  5. Step 5: Solve for x
    x = 3,071,734.36/2,472.12
  6. Step 6: Final answer
    x = 1,242.55

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1.5x scale

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.