Home / 5,319.27-7,979.31-1,808.19

Finding the Fourth Proportional to 5,319.27, 7,979.31 and 1,808.19

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Solution

The fourth proportional to 5,319.27, 7,979.31 and 1,808.19 is: 2,712.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,319.27 : 7,979.31 = 1,808.19 : x
  2. Step 2: Convert to fraction form
    5,319.27/7,979.31 = 1,808.19/x
  3. Step 3: Cross multiply
    5,319.27x = 7,979.31 × 1,808.19
  4. Step 4: Simplify right side
    5,319.27x = 14,428,108.55
  5. Step 5: Solve for x
    x = 14,428,108.55/5,319.27
  6. Step 6: Final answer
    x = 2,712.42

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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.