Home / 2,212.30-3,317.51-750.79

Finding the Fourth Proportional to 2,212.30, 3,317.51 and 750.79

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Solution

The fourth proportional to 2,212.30, 3,317.51 and 750.79 is: 1,125.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,212.30 : 3,317.51 = 750.79 : x
  2. Step 2: Convert to fraction form
    2,212.30/3,317.51 = 750.79/x
  3. Step 3: Cross multiply
    2,212.30x = 3,317.51 × 750.79
  4. Step 4: Simplify right side
    2,212.30x = 2,490,749.58
  5. Step 5: Solve for x
    x = 2,490,749.58/2,212.30
  6. Step 6: Final answer
    x = 1,125.86

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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.