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Finding the Fourth Proportional to 7,894.80, 11,838.56 and 2,346.71

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Solution

The fourth proportional to 7,894.80, 11,838.56 and 2,346.71 is: 3,518.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,894.80 : 11,838.56 = 2,346.71 : x
  2. Step 2: Convert to fraction form
    7,894.80/11,838.56 = 2,346.71/x
  3. Step 3: Cross multiply
    7,894.80x = 11,838.56 × 2,346.71
  4. Step 4: Simplify right side
    7,894.80x = 27,781,596.21
  5. Step 5: Solve for x
    x = 27,781,596.21/7,894.80
  6. Step 6: Final answer
    x = 3,518.97

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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.