Home / 6,640.16-9,955.36-3,179.84

Finding the Fourth Proportional to 6,640.16, 9,955.36 and 3,179.84

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Solution

The fourth proportional to 6,640.16, 9,955.36 and 3,179.84 is: 4,767.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,640.16 : 9,955.36 = 3,179.84 : x
  2. Step 2: Convert to fraction form
    6,640.16/9,955.36 = 3,179.84/x
  3. Step 3: Cross multiply
    6,640.16x = 9,955.36 × 3,179.84
  4. Step 4: Simplify right side
    6,640.16x = 31,656,451.94
  5. Step 5: Solve for x
    x = 31,656,451.94/6,640.16
  6. Step 6: Final answer
    x = 4,767.42

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1.5x scale

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.