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Finding the Fourth Proportional to 4,479.66, 6,714 and 3,380.58

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Solution

The fourth proportional to 4,479.66, 6,714 and 3,380.58 is: 5,066.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,479.66 : 6,714 = 3,380.58 : x
  2. Step 2: Convert to fraction form
    4,479.66/6,714 = 3,380.58/x
  3. Step 3: Cross multiply
    4,479.66x = 6,714 × 3,380.58
  4. Step 4: Simplify right side
    4,479.66x = 22,697,214.12
  5. Step 5: Solve for x
    x = 22,697,214.12/4,479.66
  6. Step 6: Final answer
    x = 5,066.73

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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.