Home / 5,680.12-7,838.58-3,196.12

Finding the Fourth Proportional to 5,680.12, 7,838.58 and 3,196.12

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Solution

The fourth proportional to 5,680.12, 7,838.58 and 3,196.12 is: 4,410.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,680.12 : 7,838.58 = 3,196.12 : x
  2. Step 2: Convert to fraction form
    5,680.12/7,838.58 = 3,196.12/x
  3. Step 3: Cross multiply
    5,680.12x = 7,838.58 × 3,196.12
  4. Step 4: Simplify right side
    5,680.12x = 25,053,042.31
  5. Step 5: Solve for x
    x = 25,053,042.31/5,680.12
  6. Step 6: Final answer
    x = 4,410.65

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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.