Home / 3,830.75-5,286.89-2,152.16

Finding the Fourth Proportional to 3,830.75, 5,286.89 and 2,152.16

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Solution

The fourth proportional to 3,830.75, 5,286.89 and 2,152.16 is: 2,970.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,830.75 : 5,286.89 = 2,152.16 : x
  2. Step 2: Convert to fraction form
    3,830.75/5,286.89 = 2,152.16/x
  3. Step 3: Cross multiply
    3,830.75x = 5,286.89 × 2,152.16
  4. Step 4: Simplify right side
    3,830.75x = 11,378,233.18
  5. Step 5: Solve for x
    x = 11,378,233.18/3,830.75
  6. Step 6: Final answer
    x = 2,970.24

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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.