Home / 8,120.19-12,179.49-5,504.50

Finding the Fourth Proportional to 8,120.19, 12,179.49 and 5,504.50

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Solution

The fourth proportional to 8,120.19, 12,179.49 and 5,504.50 is: 8,256.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,120.19 : 12,179.49 = 5,504.50 : x
  2. Step 2: Convert to fraction form
    8,120.19/12,179.49 = 5,504.50/x
  3. Step 3: Cross multiply
    8,120.19x = 12,179.49 × 5,504.50
  4. Step 4: Simplify right side
    8,120.19x = 67,042,002.71
  5. Step 5: Solve for x
    x = 67,042,002.71/8,120.19
  6. Step 6: Final answer
    x = 8,256.21

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Double scale
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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.