Home / 2,765.91-4,148.87-1,380.96

Finding the Fourth Proportional to 2,765.91, 4,148.87 and 1,380.96

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Solution

The fourth proportional to 2,765.91, 4,148.87 and 1,380.96 is: 2,071.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,765.91 : 4,148.87 = 1,380.96 : x
  2. Step 2: Convert to fraction form
    2,765.91/4,148.87 = 1,380.96/x
  3. Step 3: Cross multiply
    2,765.91x = 4,148.87 × 1,380.96
  4. Step 4: Simplify right side
    2,765.91x = 5,729,423.52
  5. Step 5: Solve for x
    x = 5,729,423.52/2,765.91
  6. Step 6: Final answer
    x = 2,071.44

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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.