Home / 8,759.20-12,087.84-5,222.72

Finding the Fourth Proportional to 8,759.20, 12,087.84 and 5,222.72

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Solution

The fourth proportional to 8,759.20, 12,087.84 and 5,222.72 is: 7,207.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,759.20 : 12,087.84 = 5,222.72 : x
  2. Step 2: Convert to fraction form
    8,759.20/12,087.84 = 5,222.72/x
  3. Step 3: Cross multiply
    8,759.20x = 12,087.84 × 5,222.72
  4. Step 4: Simplify right side
    8,759.20x = 63,131,403.72
  5. Step 5: Solve for x
    x = 63,131,403.72/8,759.20
  6. Step 6: Final answer
    x = 7,207.44

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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.