Home / 7,579.29-11,370.21-3,419.20

Finding the Fourth Proportional to 7,579.29, 11,370.21 and 3,419.20

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Solution

The fourth proportional to 7,579.29, 11,370.21 and 3,419.20 is: 5,129.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,579.29 : 11,370.21 = 3,419.20 : x
  2. Step 2: Convert to fraction form
    7,579.29/11,370.21 = 3,419.20/x
  3. Step 3: Cross multiply
    7,579.29x = 11,370.21 × 3,419.20
  4. Step 4: Simplify right side
    7,579.29x = 38,876,948.08
  5. Step 5: Solve for x
    x = 38,876,948.08/7,579.29
  6. Step 6: Final answer
    x = 5,129.37

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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.