Home / 7,512.20-11,268.30-5,427.80

Finding the Fourth Proportional to 7,512.20, 11,268.30 and 5,427.80

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Solution

The fourth proportional to 7,512.20, 11,268.30 and 5,427.80 is: 8,141.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,512.20 : 11,268.30 = 5,427.80 : x
  2. Step 2: Convert to fraction form
    7,512.20/11,268.30 = 5,427.80/x
  3. Step 3: Cross multiply
    7,512.20x = 11,268.30 × 5,427.80
  4. Step 4: Simplify right side
    7,512.20x = 61,162,078.74
  5. Step 5: Solve for x
    x = 61,162,078.74/7,512.20
  6. Step 6: Final answer
    x = 8,141.70

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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.