Home / 2,885-3,983.10-2,220.60

Finding the Fourth Proportional to 2,885, 3,983.10 and 2,220.60

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Solution

The fourth proportional to 2,885, 3,983.10 and 2,220.60 is: 3,065.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,885 : 3,983.10 = 2,220.60 : x
  2. Step 2: Convert to fraction form
    2,885/3,983.10 = 2,220.60/x
  3. Step 3: Cross multiply
    2,885x = 3,983.10 × 2,220.60
  4. Step 4: Simplify right side
    2,885x = 8,844,871.86
  5. Step 5: Solve for x
    x = 8,844,871.86/2,885
  6. Step 6: Final answer
    x = 3,065.81

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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.