Home / 2,861.26-4,291.70-1,765.78

Finding the Fourth Proportional to 2,861.26, 4,291.70 and 1,765.78

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Solution

The fourth proportional to 2,861.26, 4,291.70 and 1,765.78 is: 2,648.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,861.26 : 4,291.70 = 1,765.78 : x
  2. Step 2: Convert to fraction form
    2,861.26/4,291.70 = 1,765.78/x
  3. Step 3: Cross multiply
    2,861.26x = 4,291.70 × 1,765.78
  4. Step 4: Simplify right side
    2,861.26x = 7,578,198.03
  5. Step 5: Solve for x
    x = 7,578,198.03/2,861.26
  6. Step 6: Final answer
    x = 2,648.55

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1.5x scale

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.