Home / 8,117.20-12,169.04-3,440.80

Finding the Fourth Proportional to 8,117.20, 12,169.04 and 3,440.80

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Solution

The fourth proportional to 8,117.20, 12,169.04 and 3,440.80 is: 5,158.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,117.20 : 12,169.04 = 3,440.80 : x
  2. Step 2: Convert to fraction form
    8,117.20/12,169.04 = 3,440.80/x
  3. Step 3: Cross multiply
    8,117.20x = 12,169.04 × 3,440.80
  4. Step 4: Simplify right side
    8,117.20x = 41,871,232.83
  5. Step 5: Solve for x
    x = 41,871,232.83/8,117.20
  6. Step 6: Final answer
    x = 5,158.33

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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.