Home / 1,981.59-2,734.13-1,185.17

Finding the Fourth Proportional to 1,981.59, 2,734.13 and 1,185.17

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Solution

The fourth proportional to 1,981.59, 2,734.13 and 1,185.17 is: 1,635.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,981.59 : 2,734.13 = 1,185.17 : x
  2. Step 2: Convert to fraction form
    1,981.59/2,734.13 = 1,185.17/x
  3. Step 3: Cross multiply
    1,981.59x = 2,734.13 × 1,185.17
  4. Step 4: Simplify right side
    1,981.59x = 3,240,408.85
  5. Step 5: Solve for x
    x = 3,240,408.85/1,981.59
  6. Step 6: Final answer
    x = 1,635.26

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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.