Home / 8,474.28-12,712.23-3,280.56

Finding the Fourth Proportional to 8,474.28, 12,712.23 and 3,280.56

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Solution

The fourth proportional to 8,474.28, 12,712.23 and 3,280.56 is: 4,921.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,474.28 : 12,712.23 = 3,280.56 : x
  2. Step 2: Convert to fraction form
    8,474.28/12,712.23 = 3,280.56/x
  3. Step 3: Cross multiply
    8,474.28x = 12,712.23 × 3,280.56
  4. Step 4: Simplify right side
    8,474.28x = 41,703,233.25
  5. Step 5: Solve for x
    x = 41,703,233.25/8,474.28
  6. Step 6: Final answer
    x = 4,921.15

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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.