Home / 2,515.75-3,770.38-1,861.27

Finding the Fourth Proportional to 2,515.75, 3,770.38 and 1,861.27

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Solution

The fourth proportional to 2,515.75, 3,770.38 and 1,861.27 is: 2,789.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,515.75 : 3,770.38 = 1,861.27 : x
  2. Step 2: Convert to fraction form
    2,515.75/3,770.38 = 1,861.27/x
  3. Step 3: Cross multiply
    2,515.75x = 3,770.38 × 1,861.27
  4. Step 4: Simplify right side
    2,515.75x = 7,017,695.18
  5. Step 5: Solve for x
    x = 7,017,695.18/2,515.75
  6. Step 6: Final answer
    x = 2,789.50

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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.