Home / 8,120.28-12,199.92-7,672.19

Finding the Fourth Proportional to 8,120.28, 12,199.92 and 7,672.19

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Solution

The fourth proportional to 8,120.28, 12,199.92 and 7,672.19 is: 11,526.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,120.28 : 12,199.92 = 7,672.19 : x
  2. Step 2: Convert to fraction form
    8,120.28/12,199.92 = 7,672.19/x
  3. Step 3: Cross multiply
    8,120.28x = 12,199.92 × 7,672.19
  4. Step 4: Simplify right side
    8,120.28x = 93,600,117.39
  5. Step 5: Solve for x
    x = 93,600,117.39/8,120.28
  6. Step 6: Final answer
    x = 11,526.72

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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.