Home / 1,765.63-2,436.62-979.73

Finding the Fourth Proportional to 1,765.63, 2,436.62 and 979.73

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Solution

The fourth proportional to 1,765.63, 2,436.62 and 979.73 is: 1,352.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,765.63 : 2,436.62 = 979.73 : x
  2. Step 2: Convert to fraction form
    1,765.63/2,436.62 = 979.73/x
  3. Step 3: Cross multiply
    1,765.63x = 2,436.62 × 979.73
  4. Step 4: Simplify right side
    1,765.63x = 2,387,217.53
  5. Step 5: Solve for x
    x = 2,387,217.53/1,765.63
  6. Step 6: Final answer
    x = 1,352.05

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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.