Home / 2,211.78-3,319.04-913.25

Finding the Fourth Proportional to 2,211.78, 3,319.04 and 913.25

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Solution

The fourth proportional to 2,211.78, 3,319.04 and 913.25 is: 1,370.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,211.78 : 3,319.04 = 913.25 : x
  2. Step 2: Convert to fraction form
    2,211.78/3,319.04 = 913.25/x
  3. Step 3: Cross multiply
    2,211.78x = 3,319.04 × 913.25
  4. Step 4: Simplify right side
    2,211.78x = 3,031,113.28
  5. Step 5: Solve for x
    x = 3,031,113.28/2,211.78
  6. Step 6: Final answer
    x = 1,370.44

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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.