Home / 1,795.20-2,691.18-640.68

Finding the Fourth Proportional to 1,795.20, 2,691.18 and 640.68

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Solution

The fourth proportional to 1,795.20, 2,691.18 and 640.68 is: 960.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,795.20 : 2,691.18 = 640.68 : x
  2. Step 2: Convert to fraction form
    1,795.20/2,691.18 = 640.68/x
  3. Step 3: Cross multiply
    1,795.20x = 2,691.18 × 640.68
  4. Step 4: Simplify right side
    1,795.20x = 1,724,185.20
  5. Step 5: Solve for x
    x = 1,724,185.20/1,795.20
  6. Step 6: Final answer
    x = 960.44

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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.