Home / 3,910.38-5,398.85-2,419.88

Finding the Fourth Proportional to 3,910.38, 5,398.85 and 2,419.88

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Solution

The fourth proportional to 3,910.38, 5,398.85 and 2,419.88 is: 3,341.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,910.38 : 5,398.85 = 2,419.88 : x
  2. Step 2: Convert to fraction form
    3,910.38/5,398.85 = 2,419.88/x
  3. Step 3: Cross multiply
    3,910.38x = 5,398.85 × 2,419.88
  4. Step 4: Simplify right side
    3,910.38x = 13,064,548.19
  5. Step 5: Solve for x
    x = 13,064,548.19/3,910.38
  6. Step 6: Final answer
    x = 3,341.00

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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.