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Finding the Fourth Proportional to 5,782.43, 7,979.80 and 3,230.19

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Solution

The fourth proportional to 5,782.43, 7,979.80 and 3,230.19 is: 4,457.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,782.43 : 7,979.80 = 3,230.19 : x
  2. Step 2: Convert to fraction form
    5,782.43/7,979.80 = 3,230.19/x
  3. Step 3: Cross multiply
    5,782.43x = 7,979.80 × 3,230.19
  4. Step 4: Simplify right side
    5,782.43x = 25,776,272.55
  5. Step 5: Solve for x
    x = 25,776,272.55/5,782.43
  6. Step 6: Final answer
    x = 4,457.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.