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Finding the Fourth Proportional to 1,757.99, 2,635.79 and 891.70

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Solution

The fourth proportional to 1,757.99, 2,635.79 and 891.70 is: 1,336.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,757.99 : 2,635.79 = 891.70 : x
  2. Step 2: Convert to fraction form
    1,757.99/2,635.79 = 891.70/x
  3. Step 3: Cross multiply
    1,757.99x = 2,635.79 × 891.70
  4. Step 4: Simplify right side
    1,757.99x = 2,350,322.90
  5. Step 5: Solve for x
    x = 2,350,322.90/1,757.99
  6. Step 6: Final answer
    x = 1,336.94

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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.