Home / 8,759.76-13,139.67-2,185.94

Finding the Fourth Proportional to 8,759.76, 13,139.67 and 2,185.94

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Solution

The fourth proportional to 8,759.76, 13,139.67 and 2,185.94 is: 3,278.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,759.76 : 13,139.67 = 2,185.94 : x
  2. Step 2: Convert to fraction form
    8,759.76/13,139.67 = 2,185.94/x
  3. Step 3: Cross multiply
    8,759.76x = 13,139.67 × 2,185.94
  4. Step 4: Simplify right side
    8,759.76x = 28,722,530.24
  5. Step 5: Solve for x
    x = 28,722,530.24/8,759.76
  6. Step 6: Final answer
    x = 3,278.92

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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.