Home / 3,857.16-5,322.36-2,178.36

Finding the Fourth Proportional to 3,857.16, 5,322.36 and 2,178.36

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Solution

The fourth proportional to 3,857.16, 5,322.36 and 2,178.36 is: 3,005.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,857.16 : 5,322.36 = 2,178.36 : x
  2. Step 2: Convert to fraction form
    3,857.16/5,322.36 = 2,178.36/x
  3. Step 3: Cross multiply
    3,857.16x = 5,322.36 × 2,178.36
  4. Step 4: Simplify right side
    3,857.16x = 11,594,016.13
  5. Step 5: Solve for x
    x = 11,594,016.13/3,857.16
  6. Step 6: Final answer
    x = 3,005.84

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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.