Home / 3,896.40-5,377.68-2,325.36

Finding the Fourth Proportional to 3,896.40, 5,377.68 and 2,325.36

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Solution

The fourth proportional to 3,896.40, 5,377.68 and 2,325.36 is: 3,209.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,896.40 : 5,377.68 = 2,325.36 : x
  2. Step 2: Convert to fraction form
    3,896.40/5,377.68 = 2,325.36/x
  3. Step 3: Cross multiply
    3,896.40x = 5,377.68 × 2,325.36
  4. Step 4: Simplify right side
    3,896.40x = 12,505,041.96
  5. Step 5: Solve for x
    x = 12,505,041.96/3,896.40
  6. Step 6: Final answer
    x = 3,209.38

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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.