Home / 8,618.78-12,927.91-2,379.17

Finding the Fourth Proportional to 8,618.78, 12,927.91 and 2,379.17

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Solution

The fourth proportional to 8,618.78, 12,927.91 and 2,379.17 is: 3,568.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,618.78 : 12,927.91 = 2,379.17 : x
  2. Step 2: Convert to fraction form
    8,618.78/12,927.91 = 2,379.17/x
  3. Step 3: Cross multiply
    8,618.78x = 12,927.91 × 2,379.17
  4. Step 4: Simplify right side
    8,618.78x = 30,757,733.16
  5. Step 5: Solve for x
    x = 30,757,733.16/8,618.78
  6. Step 6: Final answer
    x = 3,568.69

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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.