Home / 5,429.25-8,138.19-2,509.47

Finding the Fourth Proportional to 5,429.25, 8,138.19 and 2,509.47

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Solution

The fourth proportional to 5,429.25, 8,138.19 and 2,509.47 is: 3,761.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,429.25 : 8,138.19 = 2,509.47 : x
  2. Step 2: Convert to fraction form
    5,429.25/8,138.19 = 2,509.47/x
  3. Step 3: Cross multiply
    5,429.25x = 8,138.19 × 2,509.47
  4. Step 4: Simplify right side
    5,429.25x = 20,422,543.66
  5. Step 5: Solve for x
    x = 20,422,543.66/5,429.25
  6. Step 6: Final answer
    x = 3,761.58

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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.