Home / 4,139.20-6,209.10-2,492.20

Finding the Fourth Proportional to 4,139.20, 6,209.10 and 2,492.20

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Solution

The fourth proportional to 4,139.20, 6,209.10 and 2,492.20 is: 3,738.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,139.20 : 6,209.10 = 2,492.20 : x
  2. Step 2: Convert to fraction form
    4,139.20/6,209.10 = 2,492.20/x
  3. Step 3: Cross multiply
    4,139.20x = 6,209.10 × 2,492.20
  4. Step 4: Simplify right side
    4,139.20x = 15,474,319.02
  5. Step 5: Solve for x
    x = 15,474,319.02/4,139.20
  6. Step 6: Final answer
    x = 3,738.48

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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.