Home / 3,639.36-5,453.46-1,689.30

Finding the Fourth Proportional to 3,639.36, 5,453.46 and 1,689.30

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Solution

The fourth proportional to 3,639.36, 5,453.46 and 1,689.30 is: 2,531.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,639.36 : 5,453.46 = 1,689.30 : x
  2. Step 2: Convert to fraction form
    3,639.36/5,453.46 = 1,689.30/x
  3. Step 3: Cross multiply
    3,639.36x = 5,453.46 × 1,689.30
  4. Step 4: Simplify right side
    3,639.36x = 9,212,529.98
  5. Step 5: Solve for x
    x = 9,212,529.98/3,639.36
  6. Step 6: Final answer
    x = 2,531.36

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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.