Home / 2,640.32-3,958.56-1,716.80

Finding the Fourth Proportional to 2,640.32, 3,958.56 and 1,716.80

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Solution

The fourth proportional to 2,640.32, 3,958.56 and 1,716.80 is: 2,573.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,640.32 : 3,958.56 = 1,716.80 : x
  2. Step 2: Convert to fraction form
    2,640.32/3,958.56 = 1,716.80/x
  3. Step 3: Cross multiply
    2,640.32x = 3,958.56 × 1,716.80
  4. Step 4: Simplify right side
    2,640.32x = 6,796,055.81
  5. Step 5: Solve for x
    x = 6,796,055.81/2,640.32
  6. Step 6: Final answer
    x = 2,573.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.