Home / 3,904.34-5,387.99-2,135.95

Finding the Fourth Proportional to 3,904.34, 5,387.99 and 2,135.95

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Solution

The fourth proportional to 3,904.34, 5,387.99 and 2,135.95 is: 2,947.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,904.34 : 5,387.99 = 2,135.95 : x
  2. Step 2: Convert to fraction form
    3,904.34/5,387.99 = 2,135.95/x
  3. Step 3: Cross multiply
    3,904.34x = 5,387.99 × 2,135.95
  4. Step 4: Simplify right side
    3,904.34x = 11,508,482.58
  5. Step 5: Solve for x
    x = 11,508,482.58/3,904.34
  6. Step 6: Final answer
    x = 2,947.61

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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.