Home / 6,680.45-9,218.36-3,696.21

Finding the Fourth Proportional to 6,680.45, 9,218.36 and 3,696.21

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Solution

The fourth proportional to 6,680.45, 9,218.36 and 3,696.21 is: 5,100.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,680.45 : 9,218.36 = 3,696.21 : x
  2. Step 2: Convert to fraction form
    6,680.45/9,218.36 = 3,696.21/x
  3. Step 3: Cross multiply
    6,680.45x = 9,218.36 × 3,696.21
  4. Step 4: Simplify right side
    6,680.45x = 34,072,956.94
  5. Step 5: Solve for x
    x = 34,072,956.94/6,680.45
  6. Step 6: Final answer
    x = 5,100.40

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Half scale
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Double 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.