Home / 2,146.90-3,221.36-1,172.97

Finding the Fourth Proportional to 2,146.90, 3,221.36 and 1,172.97

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Solution

The fourth proportional to 2,146.90, 3,221.36 and 1,172.97 is: 1,760.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,146.90 : 3,221.36 = 1,172.97 : x
  2. Step 2: Convert to fraction form
    2,146.90/3,221.36 = 1,172.97/x
  3. Step 3: Cross multiply
    2,146.90x = 3,221.36 × 1,172.97
  4. Step 4: Simplify right side
    2,146.90x = 3,778,561.57
  5. Step 5: Solve for x
    x = 3,778,561.57/2,146.90
  6. Step 6: Final answer
    x = 1,760.01

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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.