Home / 2,126.10-3,189.15-1,812.90

Finding the Fourth Proportional to 2,126.10, 3,189.15 and 1,812.90

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Solution

The fourth proportional to 2,126.10, 3,189.15 and 1,812.90 is: 2,719.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,126.10 : 3,189.15 = 1,812.90 : x
  2. Step 2: Convert to fraction form
    2,126.10/3,189.15 = 1,812.90/x
  3. Step 3: Cross multiply
    2,126.10x = 3,189.15 × 1,812.90
  4. Step 4: Simplify right side
    2,126.10x = 5,781,610.04
  5. Step 5: Solve for x
    x = 5,781,610.04/2,126.10
  6. Step 6: Final answer
    x = 2,719.35

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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.