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Finding the Fourth Proportional to 8,442.34, 12,661.35 and 3,995.62

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Solution

The fourth proportional to 8,442.34, 12,661.35 and 3,995.62 is: 5,992.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,442.34 : 12,661.35 = 3,995.62 : x
  2. Step 2: Convert to fraction form
    8,442.34/12,661.35 = 3,995.62/x
  3. Step 3: Cross multiply
    8,442.34x = 12,661.35 × 3,995.62
  4. Step 4: Simplify right side
    8,442.34x = 50,589,943.29
  5. Step 5: Solve for x
    x = 50,589,943.29/8,442.34
  6. Step 6: Final answer
    x = 5,992.41

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Double scale
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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.