Home / 3,211.63-4,418.17-2,620.87

Finding the Fourth Proportional to 3,211.63, 4,418.17 and 2,620.87

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Solution

The fourth proportional to 3,211.63, 4,418.17 and 2,620.87 is: 3,605.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,211.63 : 4,418.17 = 2,620.87 : x
  2. Step 2: Convert to fraction form
    3,211.63/4,418.17 = 2,620.87/x
  3. Step 3: Cross multiply
    3,211.63x = 4,418.17 × 2,620.87
  4. Step 4: Simplify right side
    3,211.63x = 11,579,449.21
  5. Step 5: Solve for x
    x = 11,579,449.21/3,211.63
  6. Step 6: Final answer
    x = 3,605.47

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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.