Home / 7,757.89-11,637.21-2,211.61

Finding the Fourth Proportional to 7,757.89, 11,637.21 and 2,211.61

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Solution

The fourth proportional to 7,757.89, 11,637.21 and 2,211.61 is: 3,317.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,757.89 : 11,637.21 = 2,211.61 : x
  2. Step 2: Convert to fraction form
    7,757.89/11,637.21 = 2,211.61/x
  3. Step 3: Cross multiply
    7,757.89x = 11,637.21 × 2,211.61
  4. Step 4: Simplify right side
    7,757.89x = 25,736,970.01
  5. Step 5: Solve for x
    x = 25,736,970.01/7,757.89
  6. Step 6: Final answer
    x = 3,317.52

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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.