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Finding the Fourth Proportional to 3,080.99, 4,621.49 and 1,438.69

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Solution

The fourth proportional to 3,080.99, 4,621.49 and 1,438.69 is: 2,158.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,080.99 : 4,621.49 = 1,438.69 : x
  2. Step 2: Convert to fraction form
    3,080.99/4,621.49 = 1,438.69/x
  3. Step 3: Cross multiply
    3,080.99x = 4,621.49 × 1,438.69
  4. Step 4: Simplify right side
    3,080.99x = 6,648,891.45
  5. Step 5: Solve for x
    x = 6,648,891.45/3,080.99
  6. Step 6: Final answer
    x = 2,158.04

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Similar ratio
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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.