Home / 3,894.32-5,374.18-2,125.88

Finding the Fourth Proportional to 3,894.32, 5,374.18 and 2,125.88

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Solution

The fourth proportional to 3,894.32, 5,374.18 and 2,125.88 is: 2,933.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,894.32 : 5,374.18 = 2,125.88 : x
  2. Step 2: Convert to fraction form
    3,894.32/5,374.18 = 2,125.88/x
  3. Step 3: Cross multiply
    3,894.32x = 5,374.18 × 2,125.88
  4. Step 4: Simplify right side
    3,894.32x = 11,424,861.78
  5. Step 5: Solve for x
    x = 11,424,861.78/3,894.32
  6. Step 6: Final answer
    x = 2,933.72

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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.