Home / 2,239.60-3,357.24-778.36

Finding the Fourth Proportional to 2,239.60, 3,357.24 and 778.36

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Solution

The fourth proportional to 2,239.60, 3,357.24 and 778.36 is: 1,166.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,239.60 : 3,357.24 = 778.36 : x
  2. Step 2: Convert to fraction form
    2,239.60/3,357.24 = 778.36/x
  3. Step 3: Cross multiply
    2,239.60x = 3,357.24 × 778.36
  4. Step 4: Simplify right side
    2,239.60x = 2,613,141.33
  5. Step 5: Solve for x
    x = 2,613,141.33/2,239.60
  6. Step 6: Final answer
    x = 1,166.79

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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.