Home / 3,894.29-5,373.99-2,215.88

Finding the Fourth Proportional to 3,894.29, 5,373.99 and 2,215.88

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Solution

The fourth proportional to 3,894.29, 5,373.99 and 2,215.88 is: 3,057.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,894.29 : 5,373.99 = 2,215.88 : x
  2. Step 2: Convert to fraction form
    3,894.29/5,373.99 = 2,215.88/x
  3. Step 3: Cross multiply
    3,894.29x = 5,373.99 × 2,215.88
  4. Step 4: Simplify right side
    3,894.29x = 11,908,116.96
  5. Step 5: Solve for x
    x = 11,908,116.96/3,894.29
  6. Step 6: Final answer
    x = 3,057.84

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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.