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Finding the Fourth Proportional to 8,100.80, 12,151.20 and 2,257.40

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Solution

The fourth proportional to 8,100.80, 12,151.20 and 2,257.40 is: 3,386.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,100.80 : 12,151.20 = 2,257.40 : x
  2. Step 2: Convert to fraction form
    8,100.80/12,151.20 = 2,257.40/x
  3. Step 3: Cross multiply
    8,100.80x = 12,151.20 × 2,257.40
  4. Step 4: Simplify right side
    8,100.80x = 27,430,118.88
  5. Step 5: Solve for x
    x = 27,430,118.88/8,100.80
  6. Step 6: Final answer
    x = 3,386.10

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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.