Home / 3,418.94-4,720.50-2,620.88

Finding the Fourth Proportional to 3,418.94, 4,720.50 and 2,620.88

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Solution

The fourth proportional to 3,418.94, 4,720.50 and 2,620.88 is: 3,618.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,418.94 : 4,720.50 = 2,620.88 : x
  2. Step 2: Convert to fraction form
    3,418.94/4,720.50 = 2,620.88/x
  3. Step 3: Cross multiply
    3,418.94x = 4,720.50 × 2,620.88
  4. Step 4: Simplify right side
    3,418.94x = 12,371,864.04
  5. Step 5: Solve for x
    x = 12,371,864.04/3,418.94
  6. Step 6: Final answer
    x = 3,618.63

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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.