Home / 3,758.12-5,185.70-2,185

Finding the Fourth Proportional to 3,758.12, 5,185.70 and 2,185

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Solution

The fourth proportional to 3,758.12, 5,185.70 and 2,185 is: 3,015.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,758.12 : 5,185.70 = 2,185 : x
  2. Step 2: Convert to fraction form
    3,758.12/5,185.70 = 2,185/x
  3. Step 3: Cross multiply
    3,758.12x = 5,185.70 × 2,185
  4. Step 4: Simplify right side
    3,758.12x = 11,330,754.50
  5. Step 5: Solve for x
    x = 11,330,754.50/3,758.12
  6. Step 6: Final answer
    x = 3,015.01

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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.