Home / 3,638.10-5,454.22-1,172.26

Finding the Fourth Proportional to 3,638.10, 5,454.22 and 1,172.26

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Solution

The fourth proportional to 3,638.10, 5,454.22 and 1,172.26 is: 1,757.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,638.10 : 5,454.22 = 1,172.26 : x
  2. Step 2: Convert to fraction form
    3,638.10/5,454.22 = 1,172.26/x
  3. Step 3: Cross multiply
    3,638.10x = 5,454.22 × 1,172.26
  4. Step 4: Simplify right side
    3,638.10x = 6,393,763.94
  5. Step 5: Solve for x
    x = 6,393,763.94/3,638.10
  6. Step 6: Final answer
    x = 1,757.45

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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.