Home / 9,399.54-12,971.39-5,207.79

Finding the Fourth Proportional to 9,399.54, 12,971.39 and 5,207.79

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Solution

The fourth proportional to 9,399.54, 12,971.39 and 5,207.79 is: 7,186.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,399.54 : 12,971.39 = 5,207.79 : x
  2. Step 2: Convert to fraction form
    9,399.54/12,971.39 = 5,207.79/x
  3. Step 3: Cross multiply
    9,399.54x = 12,971.39 × 5,207.79
  4. Step 4: Simplify right side
    9,399.54x = 67,552,249.09
  5. Step 5: Solve for x
    x = 67,552,249.09/9,399.54
  6. Step 6: Final answer
    x = 7,186.76

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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.