Home / 2,299.32-3,449.82-1,420.80

Finding the Fourth Proportional to 2,299.32, 3,449.82 and 1,420.80

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Solution

The fourth proportional to 2,299.32, 3,449.82 and 1,420.80 is: 2,131.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,299.32 : 3,449.82 = 1,420.80 : x
  2. Step 2: Convert to fraction form
    2,299.32/3,449.82 = 1,420.80/x
  3. Step 3: Cross multiply
    2,299.32x = 3,449.82 × 1,420.80
  4. Step 4: Simplify right side
    2,299.32x = 4,901,500.70
  5. Step 5: Solve for x
    x = 4,901,500.70/2,299.32
  6. Step 6: Final answer
    x = 2,131.72

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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.