Home / 7,664.78-11,490.91-3,968.08

Finding the Fourth Proportional to 7,664.78, 11,490.91 and 3,968.08

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Solution

The fourth proportional to 7,664.78, 11,490.91 and 3,968.08 is: 5,948.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,664.78 : 11,490.91 = 3,968.08 : x
  2. Step 2: Convert to fraction form
    7,664.78/11,490.91 = 3,968.08/x
  3. Step 3: Cross multiply
    7,664.78x = 11,490.91 × 3,968.08
  4. Step 4: Simplify right side
    7,664.78x = 45,596,850.15
  5. Step 5: Solve for x
    x = 45,596,850.15/7,664.78
  6. Step 6: Final answer
    x = 5,948.88

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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.