Home / 3,447.75-5,172.44-1,139.25

Finding the Fourth Proportional to 3,447.75, 5,172.44 and 1,139.25

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Solution

The fourth proportional to 3,447.75, 5,172.44 and 1,139.25 is: 1,709.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,447.75 : 5,172.44 = 1,139.25 : x
  2. Step 2: Convert to fraction form
    3,447.75/5,172.44 = 1,139.25/x
  3. Step 3: Cross multiply
    3,447.75x = 5,172.44 × 1,139.25
  4. Step 4: Simplify right side
    3,447.75x = 5,892,696.57
  5. Step 5: Solve for x
    x = 5,892,696.57/3,447.75
  6. Step 6: Final answer
    x = 1,709.14

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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.