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Finding the Fourth Proportional to 9,891.78, 14,836.92 and 3,968.45

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Solution

The fourth proportional to 9,891.78, 14,836.92 and 3,968.45 is: 5,952.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,891.78 : 14,836.92 = 3,968.45 : x
  2. Step 2: Convert to fraction form
    9,891.78/14,836.92 = 3,968.45/x
  3. Step 3: Cross multiply
    9,891.78x = 14,836.92 × 3,968.45
  4. Step 4: Simplify right side
    9,891.78x = 58,879,575.17
  5. Step 5: Solve for x
    x = 58,879,575.17/9,891.78
  6. Step 6: Final answer
    x = 5,952.37

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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.