Home / 2,271.70-3,134.77-1,276.79

Finding the Fourth Proportional to 2,271.70, 3,134.77 and 1,276.79

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Solution

The fourth proportional to 2,271.70, 3,134.77 and 1,276.79 is: 1,761.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,271.70 : 3,134.77 = 1,276.79 : x
  2. Step 2: Convert to fraction form
    2,271.70/3,134.77 = 1,276.79/x
  3. Step 3: Cross multiply
    2,271.70x = 3,134.77 × 1,276.79
  4. Step 4: Simplify right side
    2,271.70x = 4,002,442.99
  5. Step 5: Solve for x
    x = 4,002,442.99/2,271.70
  6. Step 6: Final answer
    x = 1,761.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.