Home / 2,189.80-3,292.80-1,833.40

Finding the Fourth Proportional to 2,189.80, 3,292.80 and 1,833.40

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Solution

The fourth proportional to 2,189.80, 3,292.80 and 1,833.40 is: 2,756.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,189.80 : 3,292.80 = 1,833.40 : x
  2. Step 2: Convert to fraction form
    2,189.80/3,292.80 = 1,833.40/x
  3. Step 3: Cross multiply
    2,189.80x = 3,292.80 × 1,833.40
  4. Step 4: Simplify right side
    2,189.80x = 6,037,019.52
  5. Step 5: Solve for x
    x = 6,037,019.52/2,189.80
  6. Step 6: Final answer
    x = 2,756.88

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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.