Home / 2,166.32-2,989.77-1,282.43

Finding the Fourth Proportional to 2,166.32, 2,989.77 and 1,282.43

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Solution

The fourth proportional to 2,166.32, 2,989.77 and 1,282.43 is: 1,769.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,166.32 : 2,989.77 = 1,282.43 : x
  2. Step 2: Convert to fraction form
    2,166.32/2,989.77 = 1,282.43/x
  3. Step 3: Cross multiply
    2,166.32x = 2,989.77 × 1,282.43
  4. Step 4: Simplify right side
    2,166.32x = 3,834,170.74
  5. Step 5: Solve for x
    x = 3,834,170.74/2,166.32
  6. Step 6: Final answer
    x = 1,769.90

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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.