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Finding the Fourth Proportional to 1,889.24, 2,833.89 and 656.69

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Solution

The fourth proportional to 1,889.24, 2,833.89 and 656.69 is: 985.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,889.24 : 2,833.89 = 656.69 : x
  2. Step 2: Convert to fraction form
    1,889.24/2,833.89 = 656.69/x
  3. Step 3: Cross multiply
    1,889.24x = 2,833.89 × 656.69
  4. Step 4: Simplify right side
    1,889.24x = 1,860,969.77
  5. Step 5: Solve for x
    x = 1,860,969.77/1,889.24
  6. Step 6: Final answer
    x = 985.04

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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.