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Finding the Fourth Proportional to 7,864, 10,854.76 and 5,069.50

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Solution

The fourth proportional to 7,864, 10,854.76 and 5,069.50 is: 6,997.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,864 : 10,854.76 = 5,069.50 : x
  2. Step 2: Convert to fraction form
    7,864/10,854.76 = 5,069.50/x
  3. Step 3: Cross multiply
    7,864x = 10,854.76 × 5,069.50
  4. Step 4: Simplify right side
    7,864x = 55,028,205.82
  5. Step 5: Solve for x
    x = 55,028,205.82/7,864
  6. Step 6: Final answer
    x = 6,997.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.