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Finding the Fourth Proportional to 1,889.96, 2,833.02 and 864.68

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Solution

The fourth proportional to 1,889.96, 2,833.02 and 864.68 is: 1,296.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,889.96 : 2,833.02 = 864.68 : x
  2. Step 2: Convert to fraction form
    1,889.96/2,833.02 = 864.68/x
  3. Step 3: Cross multiply
    1,889.96x = 2,833.02 × 864.68
  4. Step 4: Simplify right side
    1,889.96x = 2,449,655.73
  5. Step 5: Solve for x
    x = 2,449,655.73/1,889.96
  6. Step 6: Final answer
    x = 1,296.14

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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.