Home / 3,218.70-4,441.32-1,960.77

Finding the Fourth Proportional to 3,218.70, 4,441.32 and 1,960.77

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Solution

The fourth proportional to 3,218.70, 4,441.32 and 1,960.77 is: 2,705.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,218.70 : 4,441.32 = 1,960.77 : x
  2. Step 2: Convert to fraction form
    3,218.70/4,441.32 = 1,960.77/x
  3. Step 3: Cross multiply
    3,218.70x = 4,441.32 × 1,960.77
  4. Step 4: Simplify right side
    3,218.70x = 8,708,407.02
  5. Step 5: Solve for x
    x = 8,708,407.02/3,218.70
  6. Step 6: Final answer
    x = 2,705.57

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Half scale
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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.