Home / 8,080.11-12,119.78-2,816.30

Finding the Fourth Proportional to 8,080.11, 12,119.78 and 2,816.30

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Solution

The fourth proportional to 8,080.11, 12,119.78 and 2,816.30 is: 4,224.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,080.11 : 12,119.78 = 2,816.30 : x
  2. Step 2: Convert to fraction form
    8,080.11/12,119.78 = 2,816.30/x
  3. Step 3: Cross multiply
    8,080.11x = 12,119.78 × 2,816.30
  4. Step 4: Simplify right side
    8,080.11x = 34,132,973.75
  5. Step 5: Solve for x
    x = 34,132,973.75/8,080.11
  6. Step 6: Final answer
    x = 4,224.32

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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.