Home / 8,102.20-12,139.47-5,750.57

Finding the Fourth Proportional to 8,102.20, 12,139.47 and 5,750.57

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Solution

The fourth proportional to 8,102.20, 12,139.47 and 5,750.57 is: 8,616.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,102.20 : 12,139.47 = 5,750.57 : x
  2. Step 2: Convert to fraction form
    8,102.20/12,139.47 = 5,750.57/x
  3. Step 3: Cross multiply
    8,102.20x = 12,139.47 × 5,750.57
  4. Step 4: Simplify right side
    8,102.20x = 69,808,872.00
  5. Step 5: Solve for x
    x = 69,808,872.00/8,102.20
  6. Step 6: Final answer
    x = 8,616.04

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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.