Home / 3,638.02-5,458.10-1,172.79

Finding the Fourth Proportional to 3,638.02, 5,458.10 and 1,172.79

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Solution

The fourth proportional to 3,638.02, 5,458.10 and 1,172.79 is: 1,759.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,638.02 : 5,458.10 = 1,172.79 : x
  2. Step 2: Convert to fraction form
    3,638.02/5,458.10 = 1,172.79/x
  3. Step 3: Cross multiply
    3,638.02x = 5,458.10 × 1,172.79
  4. Step 4: Simplify right side
    3,638.02x = 6,401,171.94
  5. Step 5: Solve for x
    x = 6,401,171.94/3,638.02
  6. Step 6: Final answer
    x = 1,759.52

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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.