Home / 3,139.56-4,332.26-1,960.20

Finding the Fourth Proportional to 3,139.56, 4,332.26 and 1,960.20

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Solution

The fourth proportional to 3,139.56, 4,332.26 and 1,960.20 is: 2,704.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,139.56 : 4,332.26 = 1,960.20 : x
  2. Step 2: Convert to fraction form
    3,139.56/4,332.26 = 1,960.20/x
  3. Step 3: Cross multiply
    3,139.56x = 4,332.26 × 1,960.20
  4. Step 4: Simplify right side
    3,139.56x = 8,492,096.05
  5. Step 5: Solve for x
    x = 8,492,096.05/3,139.56
  6. Step 6: Final answer
    x = 2,704.87

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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.