Home / 8,138.65-12,207.81-2,592.38

Finding the Fourth Proportional to 8,138.65, 12,207.81 and 2,592.38

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Solution

The fourth proportional to 8,138.65, 12,207.81 and 2,592.38 is: 3,888.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,138.65 : 12,207.81 = 2,592.38 : x
  2. Step 2: Convert to fraction form
    8,138.65/12,207.81 = 2,592.38/x
  3. Step 3: Cross multiply
    8,138.65x = 12,207.81 × 2,592.38
  4. Step 4: Simplify right side
    8,138.65x = 31,647,282.49
  5. Step 5: Solve for x
    x = 31,647,282.49/8,138.65
  6. Step 6: Final answer
    x = 3,888.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.