Home / 7,479.80-11,221.22-2,548.12

Finding the Fourth Proportional to 7,479.80, 11,221.22 and 2,548.12

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Solution

The fourth proportional to 7,479.80, 11,221.22 and 2,548.12 is: 3,822.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,479.80 : 11,221.22 = 2,548.12 : x
  2. Step 2: Convert to fraction form
    7,479.80/11,221.22 = 2,548.12/x
  3. Step 3: Cross multiply
    7,479.80x = 11,221.22 × 2,548.12
  4. Step 4: Simplify right side
    7,479.80x = 28,593,015.11
  5. Step 5: Solve for x
    x = 28,593,015.11/7,479.80
  6. Step 6: Final answer
    x = 3,822.70

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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.