Home / 9,712.32-13,399.20-5,979.84

Finding the Fourth Proportional to 9,712.32, 13,399.20 and 5,979.84

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Solution

The fourth proportional to 9,712.32, 13,399.20 and 5,979.84 is: 8,249.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,712.32 : 13,399.20 = 5,979.84 : x
  2. Step 2: Convert to fraction form
    9,712.32/13,399.20 = 5,979.84/x
  3. Step 3: Cross multiply
    9,712.32x = 13,399.20 × 5,979.84
  4. Step 4: Simplify right side
    9,712.32x = 80,125,072.13
  5. Step 5: Solve for x
    x = 80,125,072.13/9,712.32
  6. Step 6: Final answer
    x = 8,249.84

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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.