Home / 8,472.28-12,708.68-2,628.92

Finding the Fourth Proportional to 8,472.28, 12,708.68 and 2,628.92

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Solution

The fourth proportional to 8,472.28, 12,708.68 and 2,628.92 is: 3,943.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,472.28 : 12,708.68 = 2,628.92 : x
  2. Step 2: Convert to fraction form
    8,472.28/12,708.68 = 2,628.92/x
  3. Step 3: Cross multiply
    8,472.28x = 12,708.68 × 2,628.92
  4. Step 4: Simplify right side
    8,472.28x = 33,410,103.03
  5. Step 5: Solve for x
    x = 33,410,103.03/8,472.28
  6. Step 6: Final answer
    x = 3,943.46

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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.