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Finding the Fourth Proportional to 5,551.72, 8,306 and 5,086.32

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Solution

The fourth proportional to 5,551.72, 8,306 and 5,086.32 is: 7,609.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,551.72 : 8,306 = 5,086.32 : x
  2. Step 2: Convert to fraction form
    5,551.72/8,306 = 5,086.32/x
  3. Step 3: Cross multiply
    5,551.72x = 8,306 × 5,086.32
  4. Step 4: Simplify right side
    5,551.72x = 42,246,973.92
  5. Step 5: Solve for x
    x = 42,246,973.92/5,551.72
  6. Step 6: Final answer
    x = 7,609.71

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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.