Home / 2,146.25-3,220.73-913.66

Finding the Fourth Proportional to 2,146.25, 3,220.73 and 913.66

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Solution

The fourth proportional to 2,146.25, 3,220.73 and 913.66 is: 1,371.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,146.25 : 3,220.73 = 913.66 : x
  2. Step 2: Convert to fraction form
    2,146.25/3,220.73 = 913.66/x
  3. Step 3: Cross multiply
    2,146.25x = 3,220.73 × 913.66
  4. Step 4: Simplify right side
    2,146.25x = 2,942,636.67
  5. Step 5: Solve for x
    x = 2,942,636.67/2,146.25
  6. Step 6: Final answer
    x = 1,371.06

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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.