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Finding the Fourth Proportional to 7,067.88, 9,745.65 and 5,787.77

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Solution

The fourth proportional to 7,067.88, 9,745.65 and 5,787.77 is: 7,980.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,067.88 : 9,745.65 = 5,787.77 : x
  2. Step 2: Convert to fraction form
    7,067.88/9,745.65 = 5,787.77/x
  3. Step 3: Cross multiply
    7,067.88x = 9,745.65 × 5,787.77
  4. Step 4: Simplify right side
    7,067.88x = 56,405,531.97
  5. Step 5: Solve for x
    x = 56,405,531.97/7,067.88
  6. Step 6: Final answer
    x = 7,980.54

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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.