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Finding the Fourth Proportional to 3,901.35, 5,851.98 and 979.68

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Solution

The fourth proportional to 3,901.35, 5,851.98 and 979.68 is: 1,469.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,901.35 : 5,851.98 = 979.68 : x
  2. Step 2: Convert to fraction form
    3,901.35/5,851.98 = 979.68/x
  3. Step 3: Cross multiply
    3,901.35x = 5,851.98 × 979.68
  4. Step 4: Simplify right side
    3,901.35x = 5,733,067.77
  5. Step 5: Solve for x
    x = 5,733,067.77/3,901.35
  6. Step 6: Final answer
    x = 1,469.51

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.