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Finding the Fourth Proportional to 3,752.78, 5,179.20 and 2,074.58

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Solution

The fourth proportional to 3,752.78, 5,179.20 and 2,074.58 is: 2,863.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,752.78 : 5,179.20 = 2,074.58 : x
  2. Step 2: Convert to fraction form
    3,752.78/5,179.20 = 2,074.58/x
  3. Step 3: Cross multiply
    3,752.78x = 5,179.20 × 2,074.58
  4. Step 4: Simplify right side
    3,752.78x = 10,744,664.74
  5. Step 5: Solve for x
    x = 10,744,664.74/3,752.78
  6. Step 6: Final answer
    x = 2,863.12

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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.