Home / 2,919.80-4,372.89-2,043.20

Finding the Fourth Proportional to 2,919.80, 4,372.89 and 2,043.20

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Solution

The fourth proportional to 2,919.80, 4,372.89 and 2,043.20 is: 3,060.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,919.80 : 4,372.89 = 2,043.20 : x
  2. Step 2: Convert to fraction form
    2,919.80/4,372.89 = 2,043.20/x
  3. Step 3: Cross multiply
    2,919.80x = 4,372.89 × 2,043.20
  4. Step 4: Simplify right side
    2,919.80x = 8,934,688.85
  5. Step 5: Solve for x
    x = 8,934,688.85/2,919.80
  6. Step 6: Final answer
    x = 3,060.03

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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.