Home / 5,211.09-7,189.26-3,218.19

Finding the Fourth Proportional to 5,211.09, 7,189.26 and 3,218.19

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Solution

The fourth proportional to 5,211.09, 7,189.26 and 3,218.19 is: 4,439.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,211.09 : 7,189.26 = 3,218.19 : x
  2. Step 2: Convert to fraction form
    5,211.09/7,189.26 = 3,218.19/x
  3. Step 3: Cross multiply
    5,211.09x = 7,189.26 × 3,218.19
  4. Step 4: Simplify right side
    5,211.09x = 23,136,404.64
  5. Step 5: Solve for x
    x = 23,136,404.64/5,211.09
  6. Step 6: Final answer
    x = 4,439.84

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Half scale
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Double scale
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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.