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Finding the Fourth Proportional to 8,787.15, 13,185.05 and 4,107.48

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Solution

The fourth proportional to 8,787.15, 13,185.05 and 4,107.48 is: 6,163.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,787.15 : 13,185.05 = 4,107.48 : x
  2. Step 2: Convert to fraction form
    8,787.15/13,185.05 = 4,107.48/x
  3. Step 3: Cross multiply
    8,787.15x = 13,185.05 × 4,107.48
  4. Step 4: Simplify right side
    8,787.15x = 54,157,329.17
  5. Step 5: Solve for x
    x = 54,157,329.17/8,787.15
  6. Step 6: Final answer
    x = 6,163.24

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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.