Home / 2,128.72-3,193.07-1,160.97

Finding the Fourth Proportional to 2,128.72, 3,193.07 and 1,160.97

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Solution

The fourth proportional to 2,128.72, 3,193.07 and 1,160.97 is: 1,741.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,128.72 : 3,193.07 = 1,160.97 : x
  2. Step 2: Convert to fraction form
    2,128.72/3,193.07 = 1,160.97/x
  3. Step 3: Cross multiply
    2,128.72x = 3,193.07 × 1,160.97
  4. Step 4: Simplify right side
    2,128.72x = 3,707,058.48
  5. Step 5: Solve for x
    x = 3,707,058.48/2,128.72
  6. Step 6: Final answer
    x = 1,741.45

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Half scale
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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.