Home / 8,113.19-12,169.76-3,179.35

Finding the Fourth Proportional to 8,113.19, 12,169.76 and 3,179.35

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Solution

The fourth proportional to 8,113.19, 12,169.76 and 3,179.35 is: 4,769.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,113.19 : 12,169.76 = 3,179.35 : x
  2. Step 2: Convert to fraction form
    8,113.19/12,169.76 = 3,179.35/x
  3. Step 3: Cross multiply
    8,113.19x = 12,169.76 × 3,179.35
  4. Step 4: Simplify right side
    8,113.19x = 38,691,880.13
  5. Step 5: Solve for x
    x = 38,691,880.13/8,113.19
  6. Step 6: Final answer
    x = 4,769.01

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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.