Home / 2,138.08-3,205.23-750.55

Finding the Fourth Proportional to 2,138.08, 3,205.23 and 750.55

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Solution

The fourth proportional to 2,138.08, 3,205.23 and 750.55 is: 1,125.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,138.08 : 3,205.23 = 750.55 : x
  2. Step 2: Convert to fraction form
    2,138.08/3,205.23 = 750.55/x
  3. Step 3: Cross multiply
    2,138.08x = 3,205.23 × 750.55
  4. Step 4: Simplify right side
    2,138.08x = 2,405,685.38
  5. Step 5: Solve for x
    x = 2,405,685.38/2,138.08
  6. Step 6: Final answer
    x = 1,125.16

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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.