Home / 2,189.00-3,279.85-1,538.57

Finding the Fourth Proportional to 2,189.00, 3,279.85 and 1,538.57

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Solution

The fourth proportional to 2,189.00, 3,279.85 and 1,538.57 is: 2,305.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,189.00 : 3,279.85 = 1,538.57 : x
  2. Step 2: Convert to fraction form
    2,189.00/3,279.85 = 1,538.57/x
  3. Step 3: Cross multiply
    2,189.00x = 3,279.85 × 1,538.57
  4. Step 4: Simplify right side
    2,189.00x = 5,046,283.17
  5. Step 5: Solve for x
    x = 5,046,283.17/2,189.00
  6. Step 6: Final answer
    x = 2,305.29

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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.