Home / 2,015.50-3,023.70-699.43

Finding the Fourth Proportional to 2,015.50, 3,023.70 and 699.43

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Solution

The fourth proportional to 2,015.50, 3,023.70 and 699.43 is: 1,049.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,015.50 : 3,023.70 = 699.43 : x
  2. Step 2: Convert to fraction form
    2,015.50/3,023.70 = 699.43/x
  3. Step 3: Cross multiply
    2,015.50x = 3,023.70 × 699.43
  4. Step 4: Simplify right side
    2,015.50x = 2,114,866.49
  5. Step 5: Solve for x
    x = 2,114,866.49/2,015.50
  6. Step 6: Final answer
    x = 1,049.30

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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.