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Finding the Fourth Proportional to 8,438.78, 12,644.10 and 5,968.69

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Solution

The fourth proportional to 8,438.78, 12,644.10 and 5,968.69 is: 8,943.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,438.78 : 12,644.10 = 5,968.69 : x
  2. Step 2: Convert to fraction form
    8,438.78/12,644.10 = 5,968.69/x
  3. Step 3: Cross multiply
    8,438.78x = 12,644.10 × 5,968.69
  4. Step 4: Simplify right side
    8,438.78x = 75,468,681.62
  5. Step 5: Solve for x
    x = 75,468,681.62/8,438.78
  6. Step 6: Final answer
    x = 8,943.08

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1.5x scale

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.