Home / 2,989.12-4,126.71-1,995.86

Finding the Fourth Proportional to 2,989.12, 4,126.71 and 1,995.86

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Solution

The fourth proportional to 2,989.12, 4,126.71 and 1,995.86 is: 2,755.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,989.12 : 4,126.71 = 1,995.86 : x
  2. Step 2: Convert to fraction form
    2,989.12/4,126.71 = 1,995.86/x
  3. Step 3: Cross multiply
    2,989.12x = 4,126.71 × 1,995.86
  4. Step 4: Simplify right side
    2,989.12x = 8,236,335.42
  5. Step 5: Solve for x
    x = 8,236,335.42/2,989.12
  6. Step 6: Final answer
    x = 2,755.44

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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.