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Finding the Fourth Proportional to 5,322.08, 7,978.65 and 2,317.87

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Solution

The fourth proportional to 5,322.08, 7,978.65 and 2,317.87 is: 3,474.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,322.08 : 7,978.65 = 2,317.87 : x
  2. Step 2: Convert to fraction form
    5,322.08/7,978.65 = 2,317.87/x
  3. Step 3: Cross multiply
    5,322.08x = 7,978.65 × 2,317.87
  4. Step 4: Simplify right side
    5,322.08x = 18,493,473.48
  5. Step 5: Solve for x
    x = 18,493,473.48/5,322.08
  6. Step 6: Final answer
    x = 3,474.86

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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.