Home / 2,076.35-3,113.49-905.84

Finding the Fourth Proportional to 2,076.35, 3,113.49 and 905.84

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Solution

The fourth proportional to 2,076.35, 3,113.49 and 905.84 is: 1,358.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,076.35 : 3,113.49 = 905.84 : x
  2. Step 2: Convert to fraction form
    2,076.35/3,113.49 = 905.84/x
  3. Step 3: Cross multiply
    2,076.35x = 3,113.49 × 905.84
  4. Step 4: Simplify right side
    2,076.35x = 2,820,334.96
  5. Step 5: Solve for x
    x = 2,820,334.96/2,076.35
  6. Step 6: Final answer
    x = 1,358.32

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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.