Home / 1,765.30-2,436.03-979.34

Finding the Fourth Proportional to 1,765.30, 2,436.03 and 979.34

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Solution

The fourth proportional to 1,765.30, 2,436.03 and 979.34 is: 1,351.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,765.30 : 2,436.03 = 979.34 : x
  2. Step 2: Convert to fraction form
    1,765.30/2,436.03 = 979.34/x
  3. Step 3: Cross multiply
    1,765.30x = 2,436.03 × 979.34
  4. Step 4: Simplify right side
    1,765.30x = 2,385,701.62
  5. Step 5: Solve for x
    x = 2,385,701.62/1,765.30
  6. Step 6: Final answer
    x = 1,351.44

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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.