Home / 3,609.15-4,979.23-2,116.52

Finding the Fourth Proportional to 3,609.15, 4,979.23 and 2,116.52

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Solution

The fourth proportional to 3,609.15, 4,979.23 and 2,116.52 is: 2,919.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,609.15 : 4,979.23 = 2,116.52 : x
  2. Step 2: Convert to fraction form
    3,609.15/4,979.23 = 2,116.52/x
  3. Step 3: Cross multiply
    3,609.15x = 4,979.23 × 2,116.52
  4. Step 4: Simplify right side
    3,609.15x = 10,538,639.88
  5. Step 5: Solve for x
    x = 10,538,639.88/3,609.15
  6. Step 6: Final answer
    x = 2,919.98

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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.