Home / 9,218.27-12,722.38-5,185.31

Finding the Fourth Proportional to 9,218.27, 12,722.38 and 5,185.31

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Solution

The fourth proportional to 9,218.27, 12,722.38 and 5,185.31 is: 7,156.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,218.27 : 12,722.38 = 5,185.31 : x
  2. Step 2: Convert to fraction form
    9,218.27/12,722.38 = 5,185.31/x
  3. Step 3: Cross multiply
    9,218.27x = 12,722.38 × 5,185.31
  4. Step 4: Simplify right side
    9,218.27x = 65,969,407.66
  5. Step 5: Solve for x
    x = 65,969,407.66/9,218.27
  6. Step 6: Final answer
    x = 7,156.37

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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.