Home / 7,763.86-11,645.76-3,380.80

Finding the Fourth Proportional to 7,763.86, 11,645.76 and 3,380.80

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Solution

The fourth proportional to 7,763.86, 11,645.76 and 3,380.80 is: 5,071.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,763.86 : 11,645.76 = 3,380.80 : x
  2. Step 2: Convert to fraction form
    7,763.86/11,645.76 = 3,380.80/x
  3. Step 3: Cross multiply
    7,763.86x = 11,645.76 × 3,380.80
  4. Step 4: Simplify right side
    7,763.86x = 39,371,985.41
  5. Step 5: Solve for x
    x = 39,371,985.41/7,763.86
  6. Step 6: Final answer
    x = 5,071.19

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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.