Home / 4,091.12-6,139.45-2,631.30

Finding the Fourth Proportional to 4,091.12, 6,139.45 and 2,631.30

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Solution

The fourth proportional to 4,091.12, 6,139.45 and 2,631.30 is: 3,948.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,091.12 : 6,139.45 = 2,631.30 : x
  2. Step 2: Convert to fraction form
    4,091.12/6,139.45 = 2,631.30/x
  3. Step 3: Cross multiply
    4,091.12x = 6,139.45 × 2,631.30
  4. Step 4: Simplify right side
    4,091.12x = 16,154,734.78
  5. Step 5: Solve for x
    x = 16,154,734.78/4,091.12
  6. Step 6: Final answer
    x = 3,948.73

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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.