Home / 5,218.11-7,201.32-2,860.25

Finding the Fourth Proportional to 5,218.11, 7,201.32 and 2,860.25

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Solution

The fourth proportional to 5,218.11, 7,201.32 and 2,860.25 is: 3,947.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,218.11 : 7,201.32 = 2,860.25 : x
  2. Step 2: Convert to fraction form
    5,218.11/7,201.32 = 2,860.25/x
  3. Step 3: Cross multiply
    5,218.11x = 7,201.32 × 2,860.25
  4. Step 4: Simplify right side
    5,218.11x = 20,597,575.53
  5. Step 5: Solve for x
    x = 20,597,575.53/5,218.11
  6. Step 6: Final answer
    x = 3,947.32

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.