Home / 3,975.90-5,481.57-2,557.05

Finding the Fourth Proportional to 3,975.90, 5,481.57 and 2,557.05

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Solution

The fourth proportional to 3,975.90, 5,481.57 and 2,557.05 is: 3,525.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,975.90 : 5,481.57 = 2,557.05 : x
  2. Step 2: Convert to fraction form
    3,975.90/5,481.57 = 2,557.05/x
  3. Step 3: Cross multiply
    3,975.90x = 5,481.57 × 2,557.05
  4. Step 4: Simplify right side
    3,975.90x = 14,016,648.57
  5. Step 5: Solve for x
    x = 14,016,648.57/3,975.90
  6. Step 6: Final answer
    x = 3,525.40

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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.