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Finding the Fourth Proportional to 3,671.76, 5,505.74 and 1,479.90

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Solution

The fourth proportional to 3,671.76, 5,505.74 and 1,479.90 is: 2,219.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,671.76 : 5,505.74 = 1,479.90 : x
  2. Step 2: Convert to fraction form
    3,671.76/5,505.74 = 1,479.90/x
  3. Step 3: Cross multiply
    3,671.76x = 5,505.74 × 1,479.90
  4. Step 4: Simplify right side
    3,671.76x = 8,147,920.80
  5. Step 5: Solve for x
    x = 8,147,920.80/3,671.76
  6. Step 6: Final answer
    x = 2,219.08

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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.