Home / 2,761.03-4,145.63-1,120.78

Finding the Fourth Proportional to 2,761.03, 4,145.63 and 1,120.78

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Solution

The fourth proportional to 2,761.03, 4,145.63 and 1,120.78 is: 1,682.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,761.03 : 4,145.63 = 1,120.78 : x
  2. Step 2: Convert to fraction form
    2,761.03/4,145.63 = 1,120.78/x
  3. Step 3: Cross multiply
    2,761.03x = 4,145.63 × 1,120.78
  4. Step 4: Simplify right side
    2,761.03x = 4,646,339.19
  5. Step 5: Solve for x
    x = 4,646,339.19/2,761.03
  6. Step 6: Final answer
    x = 1,682.83

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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.