Home / 2,207.64-3,311.45-1,386.49

Finding the Fourth Proportional to 2,207.64, 3,311.45 and 1,386.49

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Solution

The fourth proportional to 2,207.64, 3,311.45 and 1,386.49 is: 2,079.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,207.64 : 3,311.45 = 1,386.49 : x
  2. Step 2: Convert to fraction form
    2,207.64/3,311.45 = 1,386.49/x
  3. Step 3: Cross multiply
    2,207.64x = 3,311.45 × 1,386.49
  4. Step 4: Simplify right side
    2,207.64x = 4,591,292.31
  5. Step 5: Solve for x
    x = 4,591,292.31/2,207.64
  6. Step 6: Final answer
    x = 2,079.73

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.