Home / 3,113.06-4,292.94-2,640.42

Finding the Fourth Proportional to 3,113.06, 4,292.94 and 2,640.42

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Solution

The fourth proportional to 3,113.06, 4,292.94 and 2,640.42 is: 3,641.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,113.06 : 4,292.94 = 2,640.42 : x
  2. Step 2: Convert to fraction form
    3,113.06/4,292.94 = 2,640.42/x
  3. Step 3: Cross multiply
    3,113.06x = 4,292.94 × 2,640.42
  4. Step 4: Simplify right side
    3,113.06x = 11,335,164.63
  5. Step 5: Solve for x
    x = 11,335,164.63/3,113.06
  6. Step 6: Final answer
    x = 3,641.17

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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.