Home / 1,981.92-2,733.90-1,283.31

Finding the Fourth Proportional to 1,981.92, 2,733.90 and 1,283.31

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Solution

The fourth proportional to 1,981.92, 2,733.90 and 1,283.31 is: 1,770.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,981.92 : 2,733.90 = 1,283.31 : x
  2. Step 2: Convert to fraction form
    1,981.92/2,733.90 = 1,283.31/x
  3. Step 3: Cross multiply
    1,981.92x = 2,733.90 × 1,283.31
  4. Step 4: Simplify right side
    1,981.92x = 3,508,441.21
  5. Step 5: Solve for x
    x = 3,508,441.21/1,981.92
  6. Step 6: Final answer
    x = 1,770.22

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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.