Home / 8,380.25-11,563.46-4,842.78

Finding the Fourth Proportional to 8,380.25, 11,563.46 and 4,842.78

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Solution

The fourth proportional to 8,380.25, 11,563.46 and 4,842.78 is: 6,682.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,380.25 : 11,563.46 = 4,842.78 : x
  2. Step 2: Convert to fraction form
    8,380.25/11,563.46 = 4,842.78/x
  3. Step 3: Cross multiply
    8,380.25x = 11,563.46 × 4,842.78
  4. Step 4: Simplify right side
    8,380.25x = 55,999,243.40
  5. Step 5: Solve for x
    x = 55,999,243.40/8,380.25
  6. Step 6: Final answer
    x = 6,682.29

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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.