Home / 1,296.21-1,789.17-1,230.08

Finding the Fourth Proportional to 1,296.21, 1,789.17 and 1,230.08

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Solution

The fourth proportional to 1,296.21, 1,789.17 and 1,230.08 is: 1,697.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,296.21 : 1,789.17 = 1,230.08 : x
  2. Step 2: Convert to fraction form
    1,296.21/1,789.17 = 1,230.08/x
  3. Step 3: Cross multiply
    1,296.21x = 1,789.17 × 1,230.08
  4. Step 4: Simplify right side
    1,296.21x = 2,200,813.29
  5. Step 5: Solve for x
    x = 2,200,813.29/1,296.21
  6. Step 6: Final answer
    x = 1,697.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.