Home / 8,428.28-12,642.88-3,233.76

Finding the Fourth Proportional to 8,428.28, 12,642.88 and 3,233.76

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Solution

The fourth proportional to 8,428.28, 12,642.88 and 3,233.76 is: 4,850.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,428.28 : 12,642.88 = 3,233.76 : x
  2. Step 2: Convert to fraction form
    8,428.28/12,642.88 = 3,233.76/x
  3. Step 3: Cross multiply
    8,428.28x = 12,642.88 × 3,233.76
  4. Step 4: Simplify right side
    8,428.28x = 40,884,039.63
  5. Step 5: Solve for x
    x = 40,884,039.63/8,428.28
  6. Step 6: Final answer
    x = 4,850.82

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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.