Home / 2,144.07-3,215.70-911.25

Finding the Fourth Proportional to 2,144.07, 3,215.70 and 911.25

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Solution

The fourth proportional to 2,144.07, 3,215.70 and 911.25 is: 1,366.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,144.07 : 3,215.70 = 911.25 : x
  2. Step 2: Convert to fraction form
    2,144.07/3,215.70 = 911.25/x
  3. Step 3: Cross multiply
    2,144.07x = 3,215.70 × 911.25
  4. Step 4: Simplify right side
    2,144.07x = 2,930,306.63
  5. Step 5: Solve for x
    x = 2,930,306.63/2,144.07
  6. Step 6: Final answer
    x = 1,366.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.