Home / 3,896.40-5,380.68-2,501.60

Finding the Fourth Proportional to 3,896.40, 5,380.68 and 2,501.60

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Solution

The fourth proportional to 3,896.40, 5,380.68 and 2,501.60 is: 3,454.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,896.40 : 5,380.68 = 2,501.60 : x
  2. Step 2: Convert to fraction form
    3,896.40/5,380.68 = 2,501.60/x
  3. Step 3: Cross multiply
    3,896.40x = 5,380.68 × 2,501.60
  4. Step 4: Simplify right side
    3,896.40x = 13,460,309.09
  5. Step 5: Solve for x
    x = 13,460,309.09/3,896.40
  6. Step 6: Final answer
    x = 3,454.55

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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.