Home / 8,081.28-12,122.43-2,816.08

Finding the Fourth Proportional to 8,081.28, 12,122.43 and 2,816.08

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Solution

The fourth proportional to 8,081.28, 12,122.43 and 2,816.08 is: 4,224.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,081.28 : 12,122.43 = 2,816.08 : x
  2. Step 2: Convert to fraction form
    8,081.28/12,122.43 = 2,816.08/x
  3. Step 3: Cross multiply
    8,081.28x = 12,122.43 × 2,816.08
  4. Step 4: Simplify right side
    8,081.28x = 34,137,712.93
  5. Step 5: Solve for x
    x = 34,137,712.93/8,081.28
  6. Step 6: Final answer
    x = 4,224.30

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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.