Home / 3,214.16-4,821.24-905.66

Finding the Fourth Proportional to 3,214.16, 4,821.24 and 905.66

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Solution

The fourth proportional to 3,214.16, 4,821.24 and 905.66 is: 1,358.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,214.16 : 4,821.24 = 905.66 : x
  2. Step 2: Convert to fraction form
    3,214.16/4,821.24 = 905.66/x
  3. Step 3: Cross multiply
    3,214.16x = 4,821.24 × 905.66
  4. Step 4: Simplify right side
    3,214.16x = 4,366,404.22
  5. Step 5: Solve for x
    x = 4,366,404.22/3,214.16
  6. Step 6: Final answer
    x = 1,358.49

Related Problems

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Half scale
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Double scale
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Similar ratio
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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.