Home / 7,500.20-11,251.65-3,118.10

Finding the Fourth Proportional to 7,500.20, 11,251.65 and 3,118.10

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Solution

The fourth proportional to 7,500.20, 11,251.65 and 3,118.10 is: 4,677.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,500.20 : 11,251.65 = 3,118.10 : x
  2. Step 2: Convert to fraction form
    7,500.20/11,251.65 = 3,118.10/x
  3. Step 3: Cross multiply
    7,500.20x = 11,251.65 × 3,118.10
  4. Step 4: Simplify right side
    7,500.20x = 35,083,769.87
  5. Step 5: Solve for x
    x = 35,083,769.87/7,500.20
  6. Step 6: Final answer
    x = 4,677.71

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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.