Home / 2,189.15-3,284.70-1,148.90

Finding the Fourth Proportional to 2,189.15, 3,284.70 and 1,148.90

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Solution

The fourth proportional to 2,189.15, 3,284.70 and 1,148.90 is: 1,723.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,189.15 : 3,284.70 = 1,148.90 : x
  2. Step 2: Convert to fraction form
    2,189.15/3,284.70 = 1,148.90/x
  3. Step 3: Cross multiply
    2,189.15x = 3,284.70 × 1,148.90
  4. Step 4: Simplify right side
    2,189.15x = 3,773,791.83
  5. Step 5: Solve for x
    x = 3,773,791.83/2,189.15
  6. Step 6: Final answer
    x = 1,723.86

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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.