Home / 1,981.92-2,734.74-1,142.66

Finding the Fourth Proportional to 1,981.92, 2,734.74 and 1,142.66

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Solution

The fourth proportional to 1,981.92, 2,734.74 and 1,142.66 is: 1,576.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,981.92 : 2,734.74 = 1,142.66 : x
  2. Step 2: Convert to fraction form
    1,981.92/2,734.74 = 1,142.66/x
  3. Step 3: Cross multiply
    1,981.92x = 2,734.74 × 1,142.66
  4. Step 4: Simplify right side
    1,981.92x = 3,124,878.01
  5. Step 5: Solve for x
    x = 3,124,878.01/1,981.92
  6. Step 6: Final answer
    x = 1,576.69

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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.