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Finding the Fourth Proportional to 7,383.78, 11,028.60 and 6,679.92

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Solution

The fourth proportional to 7,383.78, 11,028.60 and 6,679.92 is: 9,977.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,383.78 : 11,028.60 = 6,679.92 : x
  2. Step 2: Convert to fraction form
    7,383.78/11,028.60 = 6,679.92/x
  3. Step 3: Cross multiply
    7,383.78x = 11,028.60 × 6,679.92
  4. Step 4: Simplify right side
    7,383.78x = 73,670,165.71
  5. Step 5: Solve for x
    x = 73,670,165.71/7,383.78
  6. Step 6: Final answer
    x = 9,977.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.