Home / 7,729.24-11,589.98-3,780.80

Finding the Fourth Proportional to 7,729.24, 11,589.98 and 3,780.80

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Solution

The fourth proportional to 7,729.24, 11,589.98 and 3,780.80 is: 5,669.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,729.24 : 11,589.98 = 3,780.80 : x
  2. Step 2: Convert to fraction form
    7,729.24/11,589.98 = 3,780.80/x
  3. Step 3: Cross multiply
    7,729.24x = 11,589.98 × 3,780.80
  4. Step 4: Simplify right side
    7,729.24x = 43,819,319.53
  5. Step 5: Solve for x
    x = 43,819,319.53/7,729.24
  6. Step 6: Final answer
    x = 5,669.29

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1.5x scale

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.