Home / 2,291.34-3,161.97-1,395.90

Finding the Fourth Proportional to 2,291.34, 3,161.97 and 1,395.90

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Solution

The fourth proportional to 2,291.34, 3,161.97 and 1,395.90 is: 1,926.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,291.34 : 3,161.97 = 1,395.90 : x
  2. Step 2: Convert to fraction form
    2,291.34/3,161.97 = 1,395.90/x
  3. Step 3: Cross multiply
    2,291.34x = 3,161.97 × 1,395.90
  4. Step 4: Simplify right side
    2,291.34x = 4,413,793.92
  5. Step 5: Solve for x
    x = 4,413,793.92/2,291.34
  6. Step 6: Final answer
    x = 1,926.29

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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.