Home / 3,639.39-5,459.88-1,330.89

Finding the Fourth Proportional to 3,639.39, 5,459.88 and 1,330.89

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Solution

The fourth proportional to 3,639.39, 5,459.88 and 1,330.89 is: 1,996.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,639.39 : 5,459.88 = 1,330.89 : x
  2. Step 2: Convert to fraction form
    3,639.39/5,459.88 = 1,330.89/x
  3. Step 3: Cross multiply
    3,639.39x = 5,459.88 × 1,330.89
  4. Step 4: Simplify right side
    3,639.39x = 7,266,499.69
  5. Step 5: Solve for x
    x = 7,266,499.69/3,639.39
  6. Step 6: Final answer
    x = 1,996.63

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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.