Home / 3,172.10-4,377.11-1,755.68

Finding the Fourth Proportional to 3,172.10, 4,377.11 and 1,755.68

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Solution

The fourth proportional to 3,172.10, 4,377.11 and 1,755.68 is: 2,422.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,172.10 : 4,377.11 = 1,755.68 : x
  2. Step 2: Convert to fraction form
    3,172.10/4,377.11 = 1,755.68/x
  3. Step 3: Cross multiply
    3,172.10x = 4,377.11 × 1,755.68
  4. Step 4: Simplify right side
    3,172.10x = 7,684,773.82
  5. Step 5: Solve for x
    x = 7,684,773.82/3,172.10
  6. Step 6: Final answer
    x = 2,422.62

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1.5x scale

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.