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Finding the Fourth Proportional to 7,027.92, 9,699.12 and 3,884.80

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Solution

The fourth proportional to 7,027.92, 9,699.12 and 3,884.80 is: 5,361.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,027.92 : 9,699.12 = 3,884.80 : x
  2. Step 2: Convert to fraction form
    7,027.92/9,699.12 = 3,884.80/x
  3. Step 3: Cross multiply
    7,027.92x = 9,699.12 × 3,884.80
  4. Step 4: Simplify right side
    7,027.92x = 37,679,141.38
  5. Step 5: Solve for x
    x = 37,679,141.38/7,027.92
  6. Step 6: Final answer
    x = 5,361.35

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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.