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Finding the Fourth Proportional to 3,894.06, 5,373.81 and 2,125.65

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Solution

The fourth proportional to 3,894.06, 5,373.81 and 2,125.65 is: 2,933.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,894.06 : 5,373.81 = 2,125.65 : x
  2. Step 2: Convert to fraction form
    3,894.06/5,373.81 = 2,125.65/x
  3. Step 3: Cross multiply
    3,894.06x = 5,373.81 × 2,125.65
  4. Step 4: Simplify right side
    3,894.06x = 11,422,839.23
  5. Step 5: Solve for x
    x = 11,422,839.23/3,894.06
  6. Step 6: Final answer
    x = 2,933.40

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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.