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Finding the Fourth Proportional to 7,178.77, 9,905.92 and 4,383.73

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Solution

The fourth proportional to 7,178.77, 9,905.92 and 4,383.73 is: 6,049.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,178.77 : 9,905.92 = 4,383.73 : x
  2. Step 2: Convert to fraction form
    7,178.77/9,905.92 = 4,383.73/x
  3. Step 3: Cross multiply
    7,178.77x = 9,905.92 × 4,383.73
  4. Step 4: Simplify right side
    7,178.77x = 43,424,878.68
  5. Step 5: Solve for x
    x = 43,424,878.68/7,178.77
  6. Step 6: Final answer
    x = 6,049.07

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1.5x scale

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.