Home / 3,311.60-4,959.30-1,578.20

Finding the Fourth Proportional to 3,311.60, 4,959.30 and 1,578.20

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Solution

The fourth proportional to 3,311.60, 4,959.30 and 1,578.20 is: 2,363.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,311.60 : 4,959.30 = 1,578.20 : x
  2. Step 2: Convert to fraction form
    3,311.60/4,959.30 = 1,578.20/x
  3. Step 3: Cross multiply
    3,311.60x = 4,959.30 × 1,578.20
  4. Step 4: Simplify right side
    3,311.60x = 7,826,767.26
  5. Step 5: Solve for x
    x = 7,826,767.26/3,311.60
  6. Step 6: Final answer
    x = 2,363.44

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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.