Home / 3,172.11-4,377.30-1,913.57

Finding the Fourth Proportional to 3,172.11, 4,377.30 and 1,913.57

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Solution

The fourth proportional to 3,172.11, 4,377.30 and 1,913.57 is: 2,640.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,172.11 : 4,377.30 = 1,913.57 : x
  2. Step 2: Convert to fraction form
    3,172.11/4,377.30 = 1,913.57/x
  3. Step 3: Cross multiply
    3,172.11x = 4,377.30 × 1,913.57
  4. Step 4: Simplify right side
    3,172.11x = 8,376,248.07
  5. Step 5: Solve for x
    x = 8,376,248.07/3,172.11
  6. Step 6: Final answer
    x = 2,640.59

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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.