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Finding the Fourth Proportional to 3,752.92, 5,178.90 and 2,180.80

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Solution

The fourth proportional to 3,752.92, 5,178.90 and 2,180.80 is: 3,009.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,752.92 : 5,178.90 = 2,180.80 : x
  2. Step 2: Convert to fraction form
    3,752.92/5,178.90 = 2,180.80/x
  3. Step 3: Cross multiply
    3,752.92x = 5,178.90 × 2,180.80
  4. Step 4: Simplify right side
    3,752.92x = 11,294,145.12
  5. Step 5: Solve for x
    x = 11,294,145.12/3,752.92
  6. Step 6: Final answer
    x = 3,009.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.