Home / 7,278.15-10,906.80-4,151.69

Finding the Fourth Proportional to 7,278.15, 10,906.80 and 4,151.69

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Solution

The fourth proportional to 7,278.15, 10,906.80 and 4,151.69 is: 6,221.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,278.15 : 10,906.80 = 4,151.69 : x
  2. Step 2: Convert to fraction form
    7,278.15/10,906.80 = 4,151.69/x
  3. Step 3: Cross multiply
    7,278.15x = 10,906.80 × 4,151.69
  4. Step 4: Simplify right side
    7,278.15x = 45,281,652.49
  5. Step 5: Solve for x
    x = 45,281,652.49/7,278.15
  6. Step 6: Final answer
    x = 6,221.59

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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.