Home / 6,680.72-9,220.20-3,885.68

Finding the Fourth Proportional to 6,680.72, 9,220.20 and 3,885.68

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Solution

The fourth proportional to 6,680.72, 9,220.20 and 3,885.68 is: 5,362.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,680.72 : 9,220.20 = 3,885.68 : x
  2. Step 2: Convert to fraction form
    6,680.72/9,220.20 = 3,885.68/x
  3. Step 3: Cross multiply
    6,680.72x = 9,220.20 × 3,885.68
  4. Step 4: Simplify right side
    6,680.72x = 35,826,746.74
  5. Step 5: Solve for x
    x = 35,826,746.74/6,680.72
  6. Step 6: Final answer
    x = 5,362.71

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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.