Home / 2,211.63-3,317.45-750.80

Finding the Fourth Proportional to 2,211.63, 3,317.45 and 750.80

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Solution

The fourth proportional to 2,211.63, 3,317.45 and 750.80 is: 1,126.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,211.63 : 3,317.45 = 750.80 : x
  2. Step 2: Convert to fraction form
    2,211.63/3,317.45 = 750.80/x
  3. Step 3: Cross multiply
    2,211.63x = 3,317.45 × 750.80
  4. Step 4: Simplify right side
    2,211.63x = 2,490,721.12
  5. Step 5: Solve for x
    x = 2,490,721.12/2,211.63
  6. Step 6: Final answer
    x = 1,126.19

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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.