Home / 8,631.82-11,912.27-4,855.15

Finding the Fourth Proportional to 8,631.82, 11,912.27 and 4,855.15

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Solution

The fourth proportional to 8,631.82, 11,912.27 and 4,855.15 is: 6,700.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,631.82 : 11,912.27 = 4,855.15 : x
  2. Step 2: Convert to fraction form
    8,631.82/11,912.27 = 4,855.15/x
  3. Step 3: Cross multiply
    8,631.82x = 11,912.27 × 4,855.15
  4. Step 4: Simplify right side
    8,631.82x = 57,835,857.69
  5. Step 5: Solve for x
    x = 57,835,857.69/8,631.82
  6. Step 6: Final answer
    x = 6,700.31

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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.