Home / 2,648.54-3,972.81-2,131.49

Finding the Fourth Proportional to 2,648.54, 3,972.81 and 2,131.49

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Solution

The fourth proportional to 2,648.54, 3,972.81 and 2,131.49 is: 3,197.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,648.54 : 3,972.81 = 2,131.49 : x
  2. Step 2: Convert to fraction form
    2,648.54/3,972.81 = 2,131.49/x
  3. Step 3: Cross multiply
    2,648.54x = 3,972.81 × 2,131.49
  4. Step 4: Simplify right side
    2,648.54x = 8,468,004.79
  5. Step 5: Solve for x
    x = 8,468,004.79/2,648.54
  6. Step 6: Final answer
    x = 3,197.24

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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.