Home / 5,540.99-7,649.39-4,279.21

Finding the Fourth Proportional to 5,540.99, 7,649.39 and 4,279.21

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Solution

The fourth proportional to 5,540.99, 7,649.39 and 4,279.21 is: 5,907.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,540.99 : 7,649.39 = 4,279.21 : x
  2. Step 2: Convert to fraction form
    5,540.99/7,649.39 = 4,279.21/x
  3. Step 3: Cross multiply
    5,540.99x = 7,649.39 × 4,279.21
  4. Step 4: Simplify right side
    5,540.99x = 32,733,305.66
  5. Step 5: Solve for x
    x = 32,733,305.66/5,540.99
  6. Step 6: Final answer
    x = 5,907.49

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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.