Home / 3,379.24-4,662.12-1,981.72

Finding the Fourth Proportional to 3,379.24, 4,662.12 and 1,981.72

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Solution

The fourth proportional to 3,379.24, 4,662.12 and 1,981.72 is: 2,734.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,379.24 : 4,662.12 = 1,981.72 : x
  2. Step 2: Convert to fraction form
    3,379.24/4,662.12 = 1,981.72/x
  3. Step 3: Cross multiply
    3,379.24x = 4,662.12 × 1,981.72
  4. Step 4: Simplify right side
    3,379.24x = 9,239,016.45
  5. Step 5: Solve for x
    x = 9,239,016.45/3,379.24
  6. Step 6: Final answer
    x = 2,734.05

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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.