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Finding the Fourth Proportional to 1,891.49, 2,835.86 and 890.27

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Solution

The fourth proportional to 1,891.49, 2,835.86 and 890.27 is: 1,334.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,891.49 : 2,835.86 = 890.27 : x
  2. Step 2: Convert to fraction form
    1,891.49/2,835.86 = 890.27/x
  3. Step 3: Cross multiply
    1,891.49x = 2,835.86 × 890.27
  4. Step 4: Simplify right side
    1,891.49x = 2,524,681.08
  5. Step 5: Solve for x
    x = 2,524,681.08/1,891.49
  6. Step 6: Final answer
    x = 1,334.76

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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.