Home / 1,981.50-2,734.77-1,184.55

Finding the Fourth Proportional to 1,981.50, 2,734.77 and 1,184.55

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Solution

The fourth proportional to 1,981.50, 2,734.77 and 1,184.55 is: 1,634.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,981.50 : 2,734.77 = 1,184.55 : x
  2. Step 2: Convert to fraction form
    1,981.50/2,734.77 = 1,184.55/x
  3. Step 3: Cross multiply
    1,981.50x = 2,734.77 × 1,184.55
  4. Step 4: Simplify right side
    1,981.50x = 3,239,471.80
  5. Step 5: Solve for x
    x = 3,239,471.80/1,981.50
  6. Step 6: Final answer
    x = 1,634.86

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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.