Home / 3,112.62-4,294.28-2,166.74

Finding the Fourth Proportional to 3,112.62, 4,294.28 and 2,166.74

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Solution

The fourth proportional to 3,112.62, 4,294.28 and 2,166.74 is: 2,989.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,112.62 : 4,294.28 = 2,166.74 : x
  2. Step 2: Convert to fraction form
    3,112.62/4,294.28 = 2,166.74/x
  3. Step 3: Cross multiply
    3,112.62x = 4,294.28 × 2,166.74
  4. Step 4: Simplify right side
    3,112.62x = 9,304,588.25
  5. Step 5: Solve for x
    x = 9,304,588.25/3,112.62
  6. Step 6: Final answer
    x = 2,989.31

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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.