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Finding the Fourth Proportional to 3,080.43, 4,621.05 and 1,619.66

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Solution

The fourth proportional to 3,080.43, 4,621.05 and 1,619.66 is: 2,429.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,080.43 : 4,621.05 = 1,619.66 : x
  2. Step 2: Convert to fraction form
    3,080.43/4,621.05 = 1,619.66/x
  3. Step 3: Cross multiply
    3,080.43x = 4,621.05 × 1,619.66
  4. Step 4: Simplify right side
    3,080.43x = 7,484,541.40
  5. Step 5: Solve for x
    x = 7,484,541.40/3,080.43
  6. Step 6: Final answer
    x = 2,429.71

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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.