Home / 5,081.76-7,620.78-2,159.07

Finding the Fourth Proportional to 5,081.76, 7,620.78 and 2,159.07

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Solution

The fourth proportional to 5,081.76, 7,620.78 and 2,159.07 is: 3,237.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,081.76 : 7,620.78 = 2,159.07 : x
  2. Step 2: Convert to fraction form
    5,081.76/7,620.78 = 2,159.07/x
  3. Step 3: Cross multiply
    5,081.76x = 7,620.78 × 2,159.07
  4. Step 4: Simplify right side
    5,081.76x = 16,453,797.47
  5. Step 5: Solve for x
    x = 16,453,797.47/5,081.76
  6. Step 6: Final answer
    x = 3,237.81

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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.