Home / 7,201.31-9,937.82-3,889.31

Finding the Fourth Proportional to 7,201.31, 9,937.82 and 3,889.31

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Solution

The fourth proportional to 7,201.31, 9,937.82 and 3,889.31 is: 5,367.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,201.31 : 9,937.82 = 3,889.31 : x
  2. Step 2: Convert to fraction form
    7,201.31/9,937.82 = 3,889.31/x
  3. Step 3: Cross multiply
    7,201.31x = 9,937.82 × 3,889.31
  4. Step 4: Simplify right side
    7,201.31x = 38,651,268.10
  5. Step 5: Solve for x
    x = 38,651,268.10/7,201.31
  6. Step 6: Final answer
    x = 5,367.25

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1.5x scale

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.