Home / 7,874.74-11,812.38-4,171.96

Finding the Fourth Proportional to 7,874.74, 11,812.38 and 4,171.96

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Solution

The fourth proportional to 7,874.74, 11,812.38 and 4,171.96 is: 6,258.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,874.74 : 11,812.38 = 4,171.96 : x
  2. Step 2: Convert to fraction form
    7,874.74/11,812.38 = 4,171.96/x
  3. Step 3: Cross multiply
    7,874.74x = 11,812.38 × 4,171.96
  4. Step 4: Simplify right side
    7,874.74x = 49,280,776.86
  5. Step 5: Solve for x
    x = 49,280,776.86/7,874.74
  6. Step 6: Final answer
    x = 6,258.08

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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.