Home / 1,296.62-1,788.57-922.77

Finding the Fourth Proportional to 1,296.62, 1,788.57 and 922.77

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Solution

The fourth proportional to 1,296.62, 1,788.57 and 922.77 is: 1,272.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,296.62 : 1,788.57 = 922.77 : x
  2. Step 2: Convert to fraction form
    1,296.62/1,788.57 = 922.77/x
  3. Step 3: Cross multiply
    1,296.62x = 1,788.57 × 922.77
  4. Step 4: Simplify right side
    1,296.62x = 1,650,438.74
  5. Step 5: Solve for x
    x = 1,650,438.74/1,296.62
  6. Step 6: Final answer
    x = 1,272.88

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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.