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Finding the Fourth Proportional to 5,786.52, 8,679.80 and 1,403.97

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Solution

The fourth proportional to 5,786.52, 8,679.80 and 1,403.97 is: 2,105.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,786.52 : 8,679.80 = 1,403.97 : x
  2. Step 2: Convert to fraction form
    5,786.52/8,679.80 = 1,403.97/x
  3. Step 3: Cross multiply
    5,786.52x = 8,679.80 × 1,403.97
  4. Step 4: Simplify right side
    5,786.52x = 12,186,178.81
  5. Step 5: Solve for x
    x = 12,186,178.81/5,786.52
  6. Step 6: Final answer
    x = 2,105.96

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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.