Home / 6,151.28-9,226.68-1,991.28

Finding the Fourth Proportional to 6,151.28, 9,226.68 and 1,991.28

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Solution

The fourth proportional to 6,151.28, 9,226.68 and 1,991.28 is: 2,986.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,151.28 : 9,226.68 = 1,991.28 : x
  2. Step 2: Convert to fraction form
    6,151.28/9,226.68 = 1,991.28/x
  3. Step 3: Cross multiply
    6,151.28x = 9,226.68 × 1,991.28
  4. Step 4: Simplify right side
    6,151.28x = 18,372,903.35
  5. Step 5: Solve for x
    x = 18,372,903.35/6,151.28
  6. Step 6: Final answer
    x = 2,986.84

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Double scale
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Similar ratio
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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.