Home / 8,151.09-11,245.12-4,961.80

Finding the Fourth Proportional to 8,151.09, 11,245.12 and 4,961.80

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Solution

The fourth proportional to 8,151.09, 11,245.12 and 4,961.80 is: 6,845.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,151.09 : 11,245.12 = 4,961.80 : x
  2. Step 2: Convert to fraction form
    8,151.09/11,245.12 = 4,961.80/x
  3. Step 3: Cross multiply
    8,151.09x = 11,245.12 × 4,961.80
  4. Step 4: Simplify right side
    8,151.09x = 55,796,036.42
  5. Step 5: Solve for x
    x = 55,796,036.42/8,151.09
  6. Step 6: Final answer
    x = 6,845.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.