Home / 2,423.20-3,635.16-779.21

Finding the Fourth Proportional to 2,423.20, 3,635.16 and 779.21

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Solution

The fourth proportional to 2,423.20, 3,635.16 and 779.21 is: 1,168.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,423.20 : 3,635.16 = 779.21 : x
  2. Step 2: Convert to fraction form
    2,423.20/3,635.16 = 779.21/x
  3. Step 3: Cross multiply
    2,423.20x = 3,635.16 × 779.21
  4. Step 4: Simplify right side
    2,423.20x = 2,832,553.02
  5. Step 5: Solve for x
    x = 2,832,553.02/2,423.20
  6. Step 6: Final answer
    x = 1,168.93

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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.