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Finding the Fourth Proportional to 3,880.62, 5,819.95 and 2,720.97

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Solution

The fourth proportional to 3,880.62, 5,819.95 and 2,720.97 is: 4,080.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,880.62 : 5,819.95 = 2,720.97 : x
  2. Step 2: Convert to fraction form
    3,880.62/5,819.95 = 2,720.97/x
  3. Step 3: Cross multiply
    3,880.62x = 5,819.95 × 2,720.97
  4. Step 4: Simplify right side
    3,880.62x = 15,835,909.35
  5. Step 5: Solve for x
    x = 15,835,909.35/3,880.62
  6. Step 6: Final answer
    x = 4,080.77

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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.