Home / 2,195.37-3,280.17-2,118.81

Finding the Fourth Proportional to 2,195.37, 3,280.17 and 2,118.81

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Solution

The fourth proportional to 2,195.37, 3,280.17 and 2,118.81 is: 3,165.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,195.37 : 3,280.17 = 2,118.81 : x
  2. Step 2: Convert to fraction form
    2,195.37/3,280.17 = 2,118.81/x
  3. Step 3: Cross multiply
    2,195.37x = 3,280.17 × 2,118.81
  4. Step 4: Simplify right side
    2,195.37x = 6,950,057.00
  5. Step 5: Solve for x
    x = 6,950,057.00/2,195.37
  6. Step 6: Final answer
    x = 3,165.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.