Home / 3,857.47-5,786.21-2,215.06

Finding the Fourth Proportional to 3,857.47, 5,786.21 and 2,215.06

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Solution

The fourth proportional to 3,857.47, 5,786.21 and 2,215.06 is: 3,322.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,857.47 : 5,786.21 = 2,215.06 : x
  2. Step 2: Convert to fraction form
    3,857.47/5,786.21 = 2,215.06/x
  3. Step 3: Cross multiply
    3,857.47x = 5,786.21 × 2,215.06
  4. Step 4: Simplify right side
    3,857.47x = 12,816,802.32
  5. Step 5: Solve for x
    x = 12,816,802.32/3,857.47
  6. Step 6: Final answer
    x = 3,322.59

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.