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Finding the Fourth Proportional to 6,291.73, 8,678.50 and 4,876.66

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Solution

The fourth proportional to 6,291.73, 8,678.50 and 4,876.66 is: 6,726.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,291.73 : 8,678.50 = 4,876.66 : x
  2. Step 2: Convert to fraction form
    6,291.73/8,678.50 = 4,876.66/x
  3. Step 3: Cross multiply
    6,291.73x = 8,678.50 × 4,876.66
  4. Step 4: Simplify right side
    6,291.73x = 42,322,093.81
  5. Step 5: Solve for x
    x = 42,322,093.81/6,291.73
  6. Step 6: Final answer
    x = 6,726.62

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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.