Home / 3,894.09-5,373.84-2,125.72

Finding the Fourth Proportional to 3,894.09, 5,373.84 and 2,125.72

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Solution

The fourth proportional to 3,894.09, 5,373.84 and 2,125.72 is: 2,933.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,894.09 : 5,373.84 = 2,125.72 : x
  2. Step 2: Convert to fraction form
    3,894.09/5,373.84 = 2,125.72/x
  3. Step 3: Cross multiply
    3,894.09x = 5,373.84 × 2,125.72
  4. Step 4: Simplify right side
    3,894.09x = 11,423,279.16
  5. Step 5: Solve for x
    x = 11,423,279.16/3,894.09
  6. Step 6: Final answer
    x = 2,933.49

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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.