Home / 8,117.08-12,170.69-3,180.80

Finding the Fourth Proportional to 8,117.08, 12,170.69 and 3,180.80

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Solution

The fourth proportional to 8,117.08, 12,170.69 and 3,180.80 is: 4,769.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,117.08 : 12,170.69 = 3,180.80 : x
  2. Step 2: Convert to fraction form
    8,117.08/12,170.69 = 3,180.80/x
  3. Step 3: Cross multiply
    8,117.08x = 12,170.69 × 3,180.80
  4. Step 4: Simplify right side
    8,117.08x = 38,712,557.20
  5. Step 5: Solve for x
    x = 38,712,557.20/8,117.08
  6. Step 6: Final answer
    x = 4,769.27

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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.