Home / 7,278.58-10,917.77-4,151.91

Finding the Fourth Proportional to 7,278.58, 10,917.77 and 4,151.91

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Solution

The fourth proportional to 7,278.58, 10,917.77 and 4,151.91 is: 6,227.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,278.58 : 10,917.77 = 4,151.91 : x
  2. Step 2: Convert to fraction form
    7,278.58/10,917.77 = 4,151.91/x
  3. Step 3: Cross multiply
    7,278.58x = 10,917.77 × 4,151.91
  4. Step 4: Simplify right side
    7,278.58x = 45,329,577.68
  5. Step 5: Solve for x
    x = 45,329,577.68/7,278.58
  6. Step 6: Final answer
    x = 6,227.81

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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.