Home / 3,901.34-5,383.85-2,108.81

Finding the Fourth Proportional to 3,901.34, 5,383.85 and 2,108.81

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Solution

The fourth proportional to 3,901.34, 5,383.85 and 2,108.81 is: 2,910.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,901.34 : 5,383.85 = 2,108.81 : x
  2. Step 2: Convert to fraction form
    3,901.34/5,383.85 = 2,108.81/x
  3. Step 3: Cross multiply
    3,901.34x = 5,383.85 × 2,108.81
  4. Step 4: Simplify right side
    3,901.34x = 11,353,519.63
  5. Step 5: Solve for x
    x = 11,353,519.63/3,901.34
  6. Step 6: Final answer
    x = 2,910.16

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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.