Home / 3,900.48-5,380.62-2,641.56

Finding the Fourth Proportional to 3,900.48, 5,380.62 and 2,641.56

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Solution

The fourth proportional to 3,900.48, 5,380.62 and 2,641.56 is: 3,643.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,900.48 : 5,380.62 = 2,641.56 : x
  2. Step 2: Convert to fraction form
    3,900.48/5,380.62 = 2,641.56/x
  3. Step 3: Cross multiply
    3,900.48x = 5,380.62 × 2,641.56
  4. Step 4: Simplify right side
    3,900.48x = 14,213,230.57
  5. Step 5: Solve for x
    x = 14,213,230.57/3,900.48
  6. Step 6: Final answer
    x = 3,643.97

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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.