Home / 2,173.80-3,020.66-2,151.23

Finding the Fourth Proportional to 2,173.80, 3,020.66 and 2,151.23

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Solution

The fourth proportional to 2,173.80, 3,020.66 and 2,151.23 is: 2,989.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,173.80 : 3,020.66 = 2,151.23 : x
  2. Step 2: Convert to fraction form
    2,173.80/3,020.66 = 2,151.23/x
  3. Step 3: Cross multiply
    2,173.80x = 3,020.66 × 2,151.23
  4. Step 4: Simplify right side
    2,173.80x = 6,498,116.62
  5. Step 5: Solve for x
    x = 6,498,116.62/2,173.80
  6. Step 6: Final answer
    x = 2,989.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.