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Finding the Fourth Proportional to 8,019.78, 12,032.64 and 2,755.32

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Solution

The fourth proportional to 8,019.78, 12,032.64 and 2,755.32 is: 4,134.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,019.78 : 12,032.64 = 2,755.32 : x
  2. Step 2: Convert to fraction form
    8,019.78/12,032.64 = 2,755.32/x
  3. Step 3: Cross multiply
    8,019.78x = 12,032.64 × 2,755.32
  4. Step 4: Simplify right side
    8,019.78x = 33,153,773.64
  5. Step 5: Solve for x
    x = 33,153,773.64/8,019.78
  6. Step 6: Final answer
    x = 4,134.00

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1.5x scale

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.