Home / 1,980.96-2,733.39-1,318.77

Finding the Fourth Proportional to 1,980.96, 2,733.39 and 1,318.77

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Solution

The fourth proportional to 1,980.96, 2,733.39 and 1,318.77 is: 1,819.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,980.96 : 2,733.39 = 1,318.77 : x
  2. Step 2: Convert to fraction form
    1,980.96/2,733.39 = 1,318.77/x
  3. Step 3: Cross multiply
    1,980.96x = 2,733.39 × 1,318.77
  4. Step 4: Simplify right side
    1,980.96x = 3,604,712.73
  5. Step 5: Solve for x
    x = 3,604,712.73/1,980.96
  6. Step 6: Final answer
    x = 1,819.68

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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.