Home / 8,122.90-12,186.83-3,440.47

Finding the Fourth Proportional to 8,122.90, 12,186.83 and 3,440.47

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Solution

The fourth proportional to 8,122.90, 12,186.83 and 3,440.47 is: 5,161.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,122.90 : 12,186.83 = 3,440.47 : x
  2. Step 2: Convert to fraction form
    8,122.90/12,186.83 = 3,440.47/x
  3. Step 3: Cross multiply
    8,122.90x = 12,186.83 × 3,440.47
  4. Step 4: Simplify right side
    8,122.90x = 41,928,423.01
  5. Step 5: Solve for x
    x = 41,928,423.01/8,122.90
  6. Step 6: Final answer
    x = 5,161.76

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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.