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Finding the Fourth Proportional to 2,757.60, 3,806.25 and 1,639.18

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Solution

The fourth proportional to 2,757.60, 3,806.25 and 1,639.18 is: 2,262.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,757.60 : 3,806.25 = 1,639.18 : x
  2. Step 2: Convert to fraction form
    2,757.60/3,806.25 = 1,639.18/x
  3. Step 3: Cross multiply
    2,757.60x = 3,806.25 × 1,639.18
  4. Step 4: Simplify right side
    2,757.60x = 6,239,128.88
  5. Step 5: Solve for x
    x = 6,239,128.88/2,757.60
  6. Step 6: Final answer
    x = 2,262.52

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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.