Home / 7,874.20-11,812.80-2,943.64

Finding the Fourth Proportional to 7,874.20, 11,812.80 and 2,943.64

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Solution

The fourth proportional to 7,874.20, 11,812.80 and 2,943.64 is: 4,416.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,874.20 : 11,812.80 = 2,943.64 : x
  2. Step 2: Convert to fraction form
    7,874.20/11,812.80 = 2,943.64/x
  3. Step 3: Cross multiply
    7,874.20x = 11,812.80 × 2,943.64
  4. Step 4: Simplify right side
    7,874.20x = 34,772,630.59
  5. Step 5: Solve for x
    x = 34,772,630.59/7,874.20
  6. Step 6: Final answer
    x = 4,416.02

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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.