Home / 3,006.75-4,149.09-1,680.20

Finding the Fourth Proportional to 3,006.75, 4,149.09 and 1,680.20

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Solution

The fourth proportional to 3,006.75, 4,149.09 and 1,680.20 is: 2,318.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,006.75 : 4,149.09 = 1,680.20 : x
  2. Step 2: Convert to fraction form
    3,006.75/4,149.09 = 1,680.20/x
  3. Step 3: Cross multiply
    3,006.75x = 4,149.09 × 1,680.20
  4. Step 4: Simplify right side
    3,006.75x = 6,971,280.27
  5. Step 5: Solve for x
    x = 6,971,280.27/3,006.75
  6. Step 6: Final answer
    x = 2,318.54

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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.