Home / 3,889.16-5,367.60-2,317.28

Finding the Fourth Proportional to 3,889.16, 5,367.60 and 2,317.28

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Solution

The fourth proportional to 3,889.16, 5,367.60 and 2,317.28 is: 3,198.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,889.16 : 5,367.60 = 2,317.28 : x
  2. Step 2: Convert to fraction form
    3,889.16/5,367.60 = 2,317.28/x
  3. Step 3: Cross multiply
    3,889.16x = 5,367.60 × 2,317.28
  4. Step 4: Simplify right side
    3,889.16x = 12,438,232.13
  5. Step 5: Solve for x
    x = 12,438,232.13/3,889.16
  6. Step 6: Final answer
    x = 3,198.18

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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.