Home / 3,821.74-5,274.32-2,143.12

Finding the Fourth Proportional to 3,821.74, 5,274.32 and 2,143.12

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Solution

The fourth proportional to 3,821.74, 5,274.32 and 2,143.12 is: 2,957.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,821.74 : 5,274.32 = 2,143.12 : x
  2. Step 2: Convert to fraction form
    3,821.74/5,274.32 = 2,143.12/x
  3. Step 3: Cross multiply
    3,821.74x = 5,274.32 × 2,143.12
  4. Step 4: Simplify right side
    3,821.74x = 11,303,500.68
  5. Step 5: Solve for x
    x = 11,303,500.68/3,821.74
  6. Step 6: Final answer
    x = 2,957.68

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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.