Home / 3,631.21-5,009.62-2,136.76

Finding the Fourth Proportional to 3,631.21, 5,009.62 and 2,136.76

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Solution

The fourth proportional to 3,631.21, 5,009.62 and 2,136.76 is: 2,947.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,631.21 : 5,009.62 = 2,136.76 : x
  2. Step 2: Convert to fraction form
    3,631.21/5,009.62 = 2,136.76/x
  3. Step 3: Cross multiply
    3,631.21x = 5,009.62 × 2,136.76
  4. Step 4: Simplify right side
    3,631.21x = 10,704,355.63
  5. Step 5: Solve for x
    x = 10,704,355.63/3,631.21
  6. Step 6: Final answer
    x = 2,947.88

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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.