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Finding the Fourth Proportional to 5,080.62, 7,621.23 and 1,960.64

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Solution

The fourth proportional to 5,080.62, 7,621.23 and 1,960.64 is: 2,941.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,080.62 : 7,621.23 = 1,960.64 : x
  2. Step 2: Convert to fraction form
    5,080.62/7,621.23 = 1,960.64/x
  3. Step 3: Cross multiply
    5,080.62x = 7,621.23 × 1,960.64
  4. Step 4: Simplify right side
    5,080.62x = 14,942,502.54
  5. Step 5: Solve for x
    x = 14,942,502.54/5,080.62
  6. Step 6: Final answer
    x = 2,941.08

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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.