Home / 10,782.38-16,173.57-2,991.20

Finding the Fourth Proportional to 10,782.38, 16,173.57 and 2,991.20

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Solution

The fourth proportional to 10,782.38, 16,173.57 and 2,991.20 is: 4,486.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,782.38 : 16,173.57 = 2,991.20 : x
  2. Step 2: Convert to fraction form
    10,782.38/16,173.57 = 2,991.20/x
  3. Step 3: Cross multiply
    10,782.38x = 16,173.57 × 2,991.20
  4. Step 4: Simplify right side
    10,782.38x = 48,378,301.72
  5. Step 5: Solve for x
    x = 48,378,301.72/10,782.38
  6. Step 6: Final answer
    x = 4,486.79

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Half scale
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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.