Home / 2,143.22-2,958.30-1,395.86

Finding the Fourth Proportional to 2,143.22, 2,958.30 and 1,395.86

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Solution

The fourth proportional to 2,143.22, 2,958.30 and 1,395.86 is: 1,926.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,143.22 : 2,958.30 = 1,395.86 : x
  2. Step 2: Convert to fraction form
    2,143.22/2,958.30 = 1,395.86/x
  3. Step 3: Cross multiply
    2,143.22x = 2,958.30 × 1,395.86
  4. Step 4: Simplify right side
    2,143.22x = 4,129,372.64
  5. Step 5: Solve for x
    x = 4,129,372.64/2,143.22
  6. Step 6: Final answer
    x = 1,926.71

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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.