Home / 8,718.42-13,078.65-3,174.38

Finding the Fourth Proportional to 8,718.42, 13,078.65 and 3,174.38

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Solution

The fourth proportional to 8,718.42, 13,078.65 and 3,174.38 is: 4,761.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,718.42 : 13,078.65 = 3,174.38 : x
  2. Step 2: Convert to fraction form
    8,718.42/13,078.65 = 3,174.38/x
  3. Step 3: Cross multiply
    8,718.42x = 13,078.65 × 3,174.38
  4. Step 4: Simplify right side
    8,718.42x = 41,516,604.99
  5. Step 5: Solve for x
    x = 41,516,604.99/8,718.42
  6. Step 6: Final answer
    x = 4,761.94

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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.