Home / 7,768.48-11,655.34-3,388.80

Finding the Fourth Proportional to 7,768.48, 11,655.34 and 3,388.80

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Solution

The fourth proportional to 7,768.48, 11,655.34 and 3,388.80 is: 5,084.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,768.48 : 11,655.34 = 3,388.80 : x
  2. Step 2: Convert to fraction form
    7,768.48/11,655.34 = 3,388.80/x
  3. Step 3: Cross multiply
    7,768.48x = 11,655.34 × 3,388.80
  4. Step 4: Simplify right side
    7,768.48x = 39,497,616.19
  5. Step 5: Solve for x
    x = 39,497,616.19/7,768.48
  6. Step 6: Final answer
    x = 5,084.34

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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.