Home / 1,765.17-2,435.82-979.22

Finding the Fourth Proportional to 1,765.17, 2,435.82 and 979.22

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Solution

The fourth proportional to 1,765.17, 2,435.82 and 979.22 is: 1,351.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,765.17 : 2,435.82 = 979.22 : x
  2. Step 2: Convert to fraction form
    1,765.17/2,435.82 = 979.22/x
  3. Step 3: Cross multiply
    1,765.17x = 2,435.82 × 979.22
  4. Step 4: Simplify right side
    1,765.17x = 2,385,191.48
  5. Step 5: Solve for x
    x = 2,385,191.48/1,765.17
  6. Step 6: Final answer
    x = 1,351.25

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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.