Home / 3,894.08-5,373.88-2,125.78

Finding the Fourth Proportional to 3,894.08, 5,373.88 and 2,125.78

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Solution

The fourth proportional to 3,894.08, 5,373.88 and 2,125.78 is: 2,933.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,894.08 : 5,373.88 = 2,125.78 : x
  2. Step 2: Convert to fraction form
    3,894.08/5,373.88 = 2,125.78/x
  3. Step 3: Cross multiply
    3,894.08x = 5,373.88 × 2,125.78
  4. Step 4: Simplify right side
    3,894.08x = 11,423,667.88
  5. Step 5: Solve for x
    x = 11,423,667.88/3,894.08
  6. Step 6: Final answer
    x = 2,933.60

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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.