Home / 7,481.25-11,220.49-2,800.77

Finding the Fourth Proportional to 7,481.25, 11,220.49 and 2,800.77

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Solution

The fourth proportional to 7,481.25, 11,220.49 and 2,800.77 is: 4,200.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,481.25 : 11,220.49 = 2,800.77 : x
  2. Step 2: Convert to fraction form
    7,481.25/11,220.49 = 2,800.77/x
  3. Step 3: Cross multiply
    7,481.25x = 11,220.49 × 2,800.77
  4. Step 4: Simplify right side
    7,481.25x = 31,426,011.78
  5. Step 5: Solve for x
    x = 31,426,011.78/7,481.25
  6. Step 6: Final answer
    x = 4,200.64

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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.