Home / 5,782.11-7,979.30-3,129.51

Finding the Fourth Proportional to 5,782.11, 7,979.30 and 3,129.51

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Solution

The fourth proportional to 5,782.11, 7,979.30 and 3,129.51 is: 4,318.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,782.11 : 7,979.30 = 3,129.51 : x
  2. Step 2: Convert to fraction form
    5,782.11/7,979.30 = 3,129.51/x
  3. Step 3: Cross multiply
    5,782.11x = 7,979.30 × 3,129.51
  4. Step 4: Simplify right side
    5,782.11x = 24,971,279.19
  5. Step 5: Solve for x
    x = 24,971,279.19/5,782.11
  6. Step 6: Final answer
    x = 4,318.72

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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.