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Finding the Fourth Proportional to 6,448.79, 9,660.23 and 3,364.31

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Solution

The fourth proportional to 6,448.79, 9,660.23 and 3,364.31 is: 5,039.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,448.79 : 9,660.23 = 3,364.31 : x
  2. Step 2: Convert to fraction form
    6,448.79/9,660.23 = 3,364.31/x
  3. Step 3: Cross multiply
    6,448.79x = 9,660.23 × 3,364.31
  4. Step 4: Simplify right side
    6,448.79x = 32,500,028.34
  5. Step 5: Solve for x
    x = 32,500,028.34/6,448.79
  6. Step 6: Final answer
    x = 5,039.71

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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.