Home / 2,142.52-3,195.77-1,945.66

Finding the Fourth Proportional to 2,142.52, 3,195.77 and 1,945.66

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Solution

The fourth proportional to 2,142.52, 3,195.77 and 1,945.66 is: 2,902.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,142.52 : 3,195.77 = 1,945.66 : x
  2. Step 2: Convert to fraction form
    2,142.52/3,195.77 = 1,945.66/x
  3. Step 3: Cross multiply
    2,142.52x = 3,195.77 × 1,945.66
  4. Step 4: Simplify right side
    2,142.52x = 6,217,881.86
  5. Step 5: Solve for x
    x = 6,217,881.86/2,142.52
  6. Step 6: Final answer
    x = 2,902.13

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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 (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.