Home / 2,229.66-3,077.24-1,285.61

Finding the Fourth Proportional to 2,229.66, 3,077.24 and 1,285.61

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Solution

The fourth proportional to 2,229.66, 3,077.24 and 1,285.61 is: 1,774.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,229.66 : 3,077.24 = 1,285.61 : x
  2. Step 2: Convert to fraction form
    2,229.66/3,077.24 = 1,285.61/x
  3. Step 3: Cross multiply
    2,229.66x = 3,077.24 × 1,285.61
  4. Step 4: Simplify right side
    2,229.66x = 3,956,108.70
  5. Step 5: Solve for x
    x = 3,956,108.70/2,229.66
  6. Step 6: Final answer
    x = 1,774.31

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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.