Home / 3,917.30-5,406.01-2,148.95

Finding the Fourth Proportional to 3,917.30, 5,406.01 and 2,148.95

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Solution

The fourth proportional to 3,917.30, 5,406.01 and 2,148.95 is: 2,965.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,917.30 : 5,406.01 = 2,148.95 : x
  2. Step 2: Convert to fraction form
    3,917.30/5,406.01 = 2,148.95/x
  3. Step 3: Cross multiply
    3,917.30x = 5,406.01 × 2,148.95
  4. Step 4: Simplify right side
    3,917.30x = 11,617,253.33
  5. Step 5: Solve for x
    x = 11,617,253.33/3,917.30
  6. Step 6: Final answer
    x = 2,965.63

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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.