Home / 3,228.81-4,458.38-2,631.39

Finding the Fourth Proportional to 3,228.81, 4,458.38 and 2,631.39

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Solution

The fourth proportional to 3,228.81, 4,458.38 and 2,631.39 is: 3,633.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,228.81 : 4,458.38 = 2,631.39 : x
  2. Step 2: Convert to fraction form
    3,228.81/4,458.38 = 2,631.39/x
  3. Step 3: Cross multiply
    3,228.81x = 4,458.38 × 2,631.39
  4. Step 4: Simplify right side
    3,228.81x = 11,731,736.55
  5. Step 5: Solve for x
    x = 11,731,736.55/3,228.81
  6. Step 6: Final answer
    x = 3,633.46

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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.