Home / 8,518.25-11,753.39-4,980.78

Finding the Fourth Proportional to 8,518.25, 11,753.39 and 4,980.78

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Solution

The fourth proportional to 8,518.25, 11,753.39 and 4,980.78 is: 6,872.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,518.25 : 11,753.39 = 4,980.78 : x
  2. Step 2: Convert to fraction form
    8,518.25/11,753.39 = 4,980.78/x
  3. Step 3: Cross multiply
    8,518.25x = 11,753.39 × 4,980.78
  4. Step 4: Simplify right side
    8,518.25x = 58,541,062.30
  5. Step 5: Solve for x
    x = 58,541,062.30/8,518.25
  6. Step 6: Final answer
    x = 6,872.43

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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.