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Finding the Fourth Proportional to 8,378.73, 12,551.73 and 4,669.77

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Solution

The fourth proportional to 8,378.73, 12,551.73 and 4,669.77 is: 6,995.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,378.73 : 12,551.73 = 4,669.77 : x
  2. Step 2: Convert to fraction form
    8,378.73/12,551.73 = 4,669.77/x
  3. Step 3: Cross multiply
    8,378.73x = 12,551.73 × 4,669.77
  4. Step 4: Simplify right side
    8,378.73x = 58,613,692.20
  5. Step 5: Solve for x
    x = 58,613,692.20/8,378.73
  6. Step 6: Final answer
    x = 6,995.53

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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.