Home / 3,138.71-4,706.22-1,191.05

Finding the Fourth Proportional to 3,138.71, 4,706.22 and 1,191.05

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Solution

The fourth proportional to 3,138.71, 4,706.22 and 1,191.05 is: 1,785.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,138.71 : 4,706.22 = 1,191.05 : x
  2. Step 2: Convert to fraction form
    3,138.71/4,706.22 = 1,191.05/x
  3. Step 3: Cross multiply
    3,138.71x = 4,706.22 × 1,191.05
  4. Step 4: Simplify right side
    3,138.71x = 5,605,343.33
  5. Step 5: Solve for x
    x = 5,605,343.33/3,138.71
  6. Step 6: Final answer
    x = 1,785.87

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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.