Home / 1,981.68-2,734.20-1,195.17

Finding the Fourth Proportional to 1,981.68, 2,734.20 and 1,195.17

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Solution

The fourth proportional to 1,981.68, 2,734.20 and 1,195.17 is: 1,649.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,981.68 : 2,734.20 = 1,195.17 : x
  2. Step 2: Convert to fraction form
    1,981.68/2,734.20 = 1,195.17/x
  3. Step 3: Cross multiply
    1,981.68x = 2,734.20 × 1,195.17
  4. Step 4: Simplify right side
    1,981.68x = 3,267,833.81
  5. Step 5: Solve for x
    x = 3,267,833.81/1,981.68
  6. Step 6: Final answer
    x = 1,649.02

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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.