Home / 2,149.13-2,965.79-1,217.81

Finding the Fourth Proportional to 2,149.13, 2,965.79 and 1,217.81

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Solution

The fourth proportional to 2,149.13, 2,965.79 and 1,217.81 is: 1,680.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,149.13 : 2,965.79 = 1,217.81 : x
  2. Step 2: Convert to fraction form
    2,149.13/2,965.79 = 1,217.81/x
  3. Step 3: Cross multiply
    2,149.13x = 2,965.79 × 1,217.81
  4. Step 4: Simplify right side
    2,149.13x = 3,611,768.72
  5. Step 5: Solve for x
    x = 3,611,768.72/2,149.13
  6. Step 6: Final answer
    x = 1,680.57

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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.