Home / 2,119.92-3,176.20-1,146.70

Finding the Fourth Proportional to 2,119.92, 3,176.20 and 1,146.70

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Solution

The fourth proportional to 2,119.92, 3,176.20 and 1,146.70 is: 1,718.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,119.92 : 3,176.20 = 1,146.70 : x
  2. Step 2: Convert to fraction form
    2,119.92/3,176.20 = 1,146.70/x
  3. Step 3: Cross multiply
    2,119.92x = 3,176.20 × 1,146.70
  4. Step 4: Simplify right side
    2,119.92x = 3,642,148.54
  5. Step 5: Solve for x
    x = 3,642,148.54/2,119.92
  6. Step 6: Final answer
    x = 1,718.06

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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.