Home / 8,180.85-11,276.11-5,787.78

Finding the Fourth Proportional to 8,180.85, 11,276.11 and 5,787.78

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Solution

The fourth proportional to 8,180.85, 11,276.11 and 5,787.78 is: 7,977.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,180.85 : 11,276.11 = 5,787.78 : x
  2. Step 2: Convert to fraction form
    8,180.85/11,276.11 = 5,787.78/x
  3. Step 3: Cross multiply
    8,180.85x = 11,276.11 × 5,787.78
  4. Step 4: Simplify right side
    8,180.85x = 65,263,643.94
  5. Step 5: Solve for x
    x = 65,263,643.94/8,180.85
  6. Step 6: Final answer
    x = 7,977.61

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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.