Home / 3,172.88-4,374-2,176.58

Finding the Fourth Proportional to 3,172.88, 4,374 and 2,176.58

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Solution

The fourth proportional to 3,172.88, 4,374 and 2,176.58 is: 3,000.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,172.88 : 4,374 = 2,176.58 : x
  2. Step 2: Convert to fraction form
    3,172.88/4,374 = 2,176.58/x
  3. Step 3: Cross multiply
    3,172.88x = 4,374 × 2,176.58
  4. Step 4: Simplify right side
    3,172.88x = 9,520,360.92
  5. Step 5: Solve for x
    x = 9,520,360.92/3,172.88
  6. Step 6: Final answer
    x = 3,000.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.