Home / 3,638.25-5,457.58-1,172.88

Finding the Fourth Proportional to 3,638.25, 5,457.58 and 1,172.88

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Solution

The fourth proportional to 3,638.25, 5,457.58 and 1,172.88 is: 1,759.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,638.25 : 5,457.58 = 1,172.88 : x
  2. Step 2: Convert to fraction form
    3,638.25/5,457.58 = 1,172.88/x
  3. Step 3: Cross multiply
    3,638.25x = 5,457.58 × 1,172.88
  4. Step 4: Simplify right side
    3,638.25x = 6,401,083.50
  5. Step 5: Solve for x
    x = 6,401,083.50/3,638.25
  6. Step 6: Final answer
    x = 1,759.39

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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.