Home / 8,100.20-12,145.08-3,418.92

Finding the Fourth Proportional to 8,100.20, 12,145.08 and 3,418.92

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Solution

The fourth proportional to 8,100.20, 12,145.08 and 3,418.92 is: 5,126.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,100.20 : 12,145.08 = 3,418.92 : x
  2. Step 2: Convert to fraction form
    8,100.20/12,145.08 = 3,418.92/x
  3. Step 3: Cross multiply
    8,100.20x = 12,145.08 × 3,418.92
  4. Step 4: Simplify right side
    8,100.20x = 41,523,056.91
  5. Step 5: Solve for x
    x = 41,523,056.91/8,100.20
  6. Step 6: Final answer
    x = 5,126.18

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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.