Home / 2,126.72-3,190.07-1,158.97

Finding the Fourth Proportional to 2,126.72, 3,190.07 and 1,158.97

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Solution

The fourth proportional to 2,126.72, 3,190.07 and 1,158.97 is: 1,738.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,126.72 : 3,190.07 = 1,158.97 : x
  2. Step 2: Convert to fraction form
    2,126.72/3,190.07 = 1,158.97/x
  3. Step 3: Cross multiply
    2,126.72x = 3,190.07 × 1,158.97
  4. Step 4: Simplify right side
    2,126.72x = 3,697,179.48
  5. Step 5: Solve for x
    x = 3,697,179.48/2,126.72
  6. Step 6: Final answer
    x = 1,738.45

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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.