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Finding the Fourth Proportional to 6,452.80, 9,664.80 and 3,860.80

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Solution

The fourth proportional to 6,452.80, 9,664.80 and 3,860.80 is: 5,782.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,452.80 : 9,664.80 = 3,860.80 : x
  2. Step 2: Convert to fraction form
    6,452.80/9,664.80 = 3,860.80/x
  3. Step 3: Cross multiply
    6,452.80x = 9,664.80 × 3,860.80
  4. Step 4: Simplify right side
    6,452.80x = 37,313,859.84
  5. Step 5: Solve for x
    x = 37,313,859.84/6,452.80
  6. Step 6: Final answer
    x = 5,782.58

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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.