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Finding the Fourth Proportional to 1,797.77, 2,691.79 and 1,330

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Solution

The fourth proportional to 1,797.77, 2,691.79 and 1,330 is: 1,991.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,797.77 : 2,691.79 = 1,330 : x
  2. Step 2: Convert to fraction form
    1,797.77/2,691.79 = 1,330/x
  3. Step 3: Cross multiply
    1,797.77x = 2,691.79 × 1,330
  4. Step 4: Simplify right side
    1,797.77x = 3,580,080.70
  5. Step 5: Solve for x
    x = 3,580,080.70/1,797.77
  6. Step 6: Final answer
    x = 1,991.40

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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.