Home / 2,159.77-3,231.45-1,336

Finding the Fourth Proportional to 2,159.77, 3,231.45 and 1,336

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Solution

The fourth proportional to 2,159.77, 3,231.45 and 1,336 is: 1,998.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,159.77 : 3,231.45 = 1,336 : x
  2. Step 2: Convert to fraction form
    2,159.77/3,231.45 = 1,336/x
  3. Step 3: Cross multiply
    2,159.77x = 3,231.45 × 1,336
  4. Step 4: Simplify right side
    2,159.77x = 4,317,217.20
  5. Step 5: Solve for x
    x = 4,317,217.20/2,159.77
  6. Step 6: Final answer
    x = 1,998.92

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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.