Home / 2,189.10-3,283.65-1,983.90

Finding the Fourth Proportional to 2,189.10, 3,283.65 and 1,983.90

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Solution

The fourth proportional to 2,189.10, 3,283.65 and 1,983.90 is: 2,975.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,189.10 : 3,283.65 = 1,983.90 : x
  2. Step 2: Convert to fraction form
    2,189.10/3,283.65 = 1,983.90/x
  3. Step 3: Cross multiply
    2,189.10x = 3,283.65 × 1,983.90
  4. Step 4: Simplify right side
    2,189.10x = 6,514,433.24
  5. Step 5: Solve for x
    x = 6,514,433.24/2,189.10
  6. Step 6: Final answer
    x = 2,975.85

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Double scale
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Similar ratio
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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.