Home / 2,101.38-3,152.75-1,372.38

Finding the Fourth Proportional to 2,101.38, 3,152.75 and 1,372.38

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Solution

The fourth proportional to 2,101.38, 3,152.75 and 1,372.38 is: 2,059.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,101.38 : 3,152.75 = 1,372.38 : x
  2. Step 2: Convert to fraction form
    2,101.38/3,152.75 = 1,372.38/x
  3. Step 3: Cross multiply
    2,101.38x = 3,152.75 × 1,372.38
  4. Step 4: Simplify right side
    2,101.38x = 4,326,764.18
  5. Step 5: Solve for x
    x = 4,326,764.18/2,101.38
  6. Step 6: Final answer
    x = 2,059.01

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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.