Home / 3,917.50-5,406.79-2,262.46

Finding the Fourth Proportional to 3,917.50, 5,406.79 and 2,262.46

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Solution

The fourth proportional to 3,917.50, 5,406.79 and 2,262.46 is: 3,122.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,917.50 : 5,406.79 = 2,262.46 : x
  2. Step 2: Convert to fraction form
    3,917.50/5,406.79 = 2,262.46/x
  3. Step 3: Cross multiply
    3,917.50x = 5,406.79 × 2,262.46
  4. Step 4: Simplify right side
    3,917.50x = 12,232,646.10
  5. Step 5: Solve for x
    x = 12,232,646.10/3,917.50
  6. Step 6: Final answer
    x = 3,122.56

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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.