Home / 3,639.21-5,459.97-1,299.17

Finding the Fourth Proportional to 3,639.21, 5,459.97 and 1,299.17

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Solution

The fourth proportional to 3,639.21, 5,459.97 and 1,299.17 is: 1,949.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,639.21 : 5,459.97 = 1,299.17 : x
  2. Step 2: Convert to fraction form
    3,639.21/5,459.97 = 1,299.17/x
  3. Step 3: Cross multiply
    3,639.21x = 5,459.97 × 1,299.17
  4. Step 4: Simplify right side
    3,639.21x = 7,093,405.17
  5. Step 5: Solve for x
    x = 7,093,405.17/3,639.21
  6. Step 6: Final answer
    x = 1,949.16

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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.