Home / 2,999.26-4,138.78-2,291.58

Finding the Fourth Proportional to 2,999.26, 4,138.78 and 2,291.58

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Solution

The fourth proportional to 2,999.26, 4,138.78 and 2,291.58 is: 3,162.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,999.26 : 4,138.78 = 2,291.58 : x
  2. Step 2: Convert to fraction form
    2,999.26/4,138.78 = 2,291.58/x
  3. Step 3: Cross multiply
    2,999.26x = 4,138.78 × 2,291.58
  4. Step 4: Simplify right side
    2,999.26x = 9,484,345.47
  5. Step 5: Solve for x
    x = 9,484,345.47/2,999.26
  6. Step 6: Final answer
    x = 3,162.23

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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.