Home / 9,215.82-12,717.16-5,679.09

Finding the Fourth Proportional to 9,215.82, 12,717.16 and 5,679.09

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Solution

The fourth proportional to 9,215.82, 12,717.16 and 5,679.09 is: 7,836.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,215.82 : 12,717.16 = 5,679.09 : x
  2. Step 2: Convert to fraction form
    9,215.82/12,717.16 = 5,679.09/x
  3. Step 3: Cross multiply
    9,215.82x = 12,717.16 × 5,679.09
  4. Step 4: Simplify right side
    9,215.82x = 72,221,896.18
  5. Step 5: Solve for x
    x = 72,221,896.18/9,215.82
  6. Step 6: Final answer
    x = 7,836.73

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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.