Home / 7,081.75-10,620.96-2,917.63

Finding the Fourth Proportional to 7,081.75, 10,620.96 and 2,917.63

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Solution

The fourth proportional to 7,081.75, 10,620.96 and 2,917.63 is: 4,375.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,081.75 : 10,620.96 = 2,917.63 : x
  2. Step 2: Convert to fraction form
    7,081.75/10,620.96 = 2,917.63/x
  3. Step 3: Cross multiply
    7,081.75x = 10,620.96 × 2,917.63
  4. Step 4: Simplify right side
    7,081.75x = 30,988,031.52
  5. Step 5: Solve for x
    x = 30,988,031.52/7,081.75
  6. Step 6: Final answer
    x = 4,375.76

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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.