Home / 2,189.10-3,278.54-1,531.65

Finding the Fourth Proportional to 2,189.10, 3,278.54 and 1,531.65

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Solution

The fourth proportional to 2,189.10, 3,278.54 and 1,531.65 is: 2,293.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,189.10 : 3,278.54 = 1,531.65 : x
  2. Step 2: Convert to fraction form
    2,189.10/3,278.54 = 1,531.65/x
  3. Step 3: Cross multiply
    2,189.10x = 3,278.54 × 1,531.65
  4. Step 4: Simplify right side
    2,189.10x = 5,021,579.62
  5. Step 5: Solve for x
    x = 5,021,579.62/2,189.10
  6. Step 6: Final answer
    x = 2,293.90

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1.5x scale

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.