Home / 2,126.13-3,189.20-971.07

Finding the Fourth Proportional to 2,126.13, 3,189.20 and 971.07

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Solution

The fourth proportional to 2,126.13, 3,189.20 and 971.07 is: 1,456.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,126.13 : 3,189.20 = 971.07 : x
  2. Step 2: Convert to fraction form
    2,126.13/3,189.20 = 971.07/x
  3. Step 3: Cross multiply
    2,126.13x = 3,189.20 × 971.07
  4. Step 4: Simplify right side
    2,126.13x = 3,096,936.44
  5. Step 5: Solve for x
    x = 3,096,936.44/2,126.13
  6. Step 6: Final answer
    x = 1,456.61

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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.