Home / 7,759.80-11,641.53-3,378.51

Finding the Fourth Proportional to 7,759.80, 11,641.53 and 3,378.51

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Solution

The fourth proportional to 7,759.80, 11,641.53 and 3,378.51 is: 5,068.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,759.80 : 11,641.53 = 3,378.51 : x
  2. Step 2: Convert to fraction form
    7,759.80/11,641.53 = 3,378.51/x
  3. Step 3: Cross multiply
    7,759.80x = 11,641.53 × 3,378.51
  4. Step 4: Simplify right side
    7,759.80x = 39,331,025.52
  5. Step 5: Solve for x
    x = 39,331,025.52/7,759.80
  6. Step 6: Final answer
    x = 5,068.56

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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.