Home / 8,277.80-11,422.10-4,920.54

Finding the Fourth Proportional to 8,277.80, 11,422.10 and 4,920.54

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Solution

The fourth proportional to 8,277.80, 11,422.10 and 4,920.54 is: 6,789.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,277.80 : 11,422.10 = 4,920.54 : x
  2. Step 2: Convert to fraction form
    8,277.80/11,422.10 = 4,920.54/x
  3. Step 3: Cross multiply
    8,277.80x = 11,422.10 × 4,920.54
  4. Step 4: Simplify right side
    8,277.80x = 56,202,899.93
  5. Step 5: Solve for x
    x = 56,202,899.93/8,277.80
  6. Step 6: Final answer
    x = 6,789.59

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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.