Home / 3,079.38-4,250.20-1,960.10

Finding the Fourth Proportional to 3,079.38, 4,250.20 and 1,960.10

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Solution

The fourth proportional to 3,079.38, 4,250.20 and 1,960.10 is: 2,705.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,079.38 : 4,250.20 = 1,960.10 : x
  2. Step 2: Convert to fraction form
    3,079.38/4,250.20 = 1,960.10/x
  3. Step 3: Cross multiply
    3,079.38x = 4,250.20 × 1,960.10
  4. Step 4: Simplify right side
    3,079.38x = 8,330,795.77
  5. Step 5: Solve for x
    x = 8,330,795.77/3,079.38
  6. Step 6: Final answer
    x = 2,705.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.