Home / 3,113.38-4,295.73-2,121.94

Finding the Fourth Proportional to 3,113.38, 4,295.73 and 2,121.94

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Solution

The fourth proportional to 3,113.38, 4,295.73 and 2,121.94 is: 2,927.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,113.38 : 4,295.73 = 2,121.94 : x
  2. Step 2: Convert to fraction form
    3,113.38/4,295.73 = 2,121.94/x
  3. Step 3: Cross multiply
    3,113.38x = 4,295.73 × 2,121.94
  4. Step 4: Simplify right side
    3,113.38x = 9,115,281.32
  5. Step 5: Solve for x
    x = 9,115,281.32/3,113.38
  6. Step 6: Final answer
    x = 2,927.78

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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.