Home / 3,609.11-4,980.36-2,116.91

Finding the Fourth Proportional to 3,609.11, 4,980.36 and 2,116.91

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Solution

The fourth proportional to 3,609.11, 4,980.36 and 2,116.91 is: 2,921.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,609.11 : 4,980.36 = 2,116.91 : x
  2. Step 2: Convert to fraction form
    3,609.11/4,980.36 = 2,116.91/x
  3. Step 3: Cross multiply
    3,609.11x = 4,980.36 × 2,116.91
  4. Step 4: Simplify right side
    3,609.11x = 10,542,974.32
  5. Step 5: Solve for x
    x = 10,542,974.32/3,609.11
  6. Step 6: Final answer
    x = 2,921.21

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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.