Home / 4,855.21-7,279.43-2,478.68

Finding the Fourth Proportional to 4,855.21, 7,279.43 and 2,478.68

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Solution

The fourth proportional to 4,855.21, 7,279.43 and 2,478.68 is: 3,716.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,855.21 : 7,279.43 = 2,478.68 : x
  2. Step 2: Convert to fraction form
    4,855.21/7,279.43 = 2,478.68/x
  3. Step 3: Cross multiply
    4,855.21x = 7,279.43 × 2,478.68
  4. Step 4: Simplify right side
    4,855.21x = 18,043,347.35
  5. Step 5: Solve for x
    x = 18,043,347.35/4,855.21
  6. Step 6: Final answer
    x = 3,716.29

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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.