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Finding the Fourth Proportional to 2,080.52, 3,119.10 and 847.64

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Solution

The fourth proportional to 2,080.52, 3,119.10 and 847.64 is: 1,270.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,080.52 : 3,119.10 = 847.64 : x
  2. Step 2: Convert to fraction form
    2,080.52/3,119.10 = 847.64/x
  3. Step 3: Cross multiply
    2,080.52x = 3,119.10 × 847.64
  4. Step 4: Simplify right side
    2,080.52x = 2,643,873.92
  5. Step 5: Solve for x
    x = 2,643,873.92/2,080.52
  6. Step 6: Final answer
    x = 1,270.78

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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.