Home / 3,947.60-5,927.80-2,859.60

Finding the Fourth Proportional to 3,947.60, 5,927.80 and 2,859.60

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Solution

The fourth proportional to 3,947.60, 5,927.80 and 2,859.60 is: 4,294.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,947.60 : 5,927.80 = 2,859.60 : x
  2. Step 2: Convert to fraction form
    3,947.60/5,927.80 = 2,859.60/x
  3. Step 3: Cross multiply
    3,947.60x = 5,927.80 × 2,859.60
  4. Step 4: Simplify right side
    3,947.60x = 16,951,136.88
  5. Step 5: Solve for x
    x = 16,951,136.88/3,947.60
  6. Step 6: Final answer
    x = 4,294.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.