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Finding the Fourth Proportional to 4,855.60, 7,279.07 and 4,119.91

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Solution

The fourth proportional to 4,855.60, 7,279.07 and 4,119.91 is: 6,176.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,855.60 : 7,279.07 = 4,119.91 : x
  2. Step 2: Convert to fraction form
    4,855.60/7,279.07 = 4,119.91/x
  3. Step 3: Cross multiply
    4,855.60x = 7,279.07 × 4,119.91
  4. Step 4: Simplify right side
    4,855.60x = 29,989,115.43
  5. Step 5: Solve for x
    x = 29,989,115.43/4,855.60
  6. Step 6: Final answer
    x = 6,176.20

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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.