Home / 3,917.17-5,405.85-2,238.85

Finding the Fourth Proportional to 3,917.17, 5,405.85 and 2,238.85

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Solution

The fourth proportional to 3,917.17, 5,405.85 and 2,238.85 is: 3,089.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,917.17 : 5,405.85 = 2,238.85 : x
  2. Step 2: Convert to fraction form
    3,917.17/5,405.85 = 2,238.85/x
  3. Step 3: Cross multiply
    3,917.17x = 5,405.85 × 2,238.85
  4. Step 4: Simplify right side
    3,917.17x = 12,102,887.27
  5. Step 5: Solve for x
    x = 12,102,887.27/3,917.17
  6. Step 6: Final answer
    x = 3,089.70

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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.