Home / 2,765.85-4,145.67-1,207.19

Finding the Fourth Proportional to 2,765.85, 4,145.67 and 1,207.19

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Solution

The fourth proportional to 2,765.85, 4,145.67 and 1,207.19 is: 1,809.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,765.85 : 4,145.67 = 1,207.19 : x
  2. Step 2: Convert to fraction form
    2,765.85/4,145.67 = 1,207.19/x
  3. Step 3: Cross multiply
    2,765.85x = 4,145.67 × 1,207.19
  4. Step 4: Simplify right side
    2,765.85x = 5,004,590.64
  5. Step 5: Solve for x
    x = 5,004,590.64/2,765.85
  6. Step 6: Final answer
    x = 1,809.42

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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.