Home / 3,638.79-5,459.81-1,329.75

Finding the Fourth Proportional to 3,638.79, 5,459.81 and 1,329.75

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Solution

The fourth proportional to 3,638.79, 5,459.81 and 1,329.75 is: 1,995.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,638.79 : 5,459.81 = 1,329.75 : x
  2. Step 2: Convert to fraction form
    3,638.79/5,459.81 = 1,329.75/x
  3. Step 3: Cross multiply
    3,638.79x = 5,459.81 × 1,329.75
  4. Step 4: Simplify right side
    3,638.79x = 7,260,175.70
  5. Step 5: Solve for x
    x = 7,260,175.70/3,638.79
  6. Step 6: Final answer
    x = 1,995.22

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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.