Home / 5,215.46-7,197.06-2,857.55

Finding the Fourth Proportional to 5,215.46, 7,197.06 and 2,857.55

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Solution

The fourth proportional to 5,215.46, 7,197.06 and 2,857.55 is: 3,943.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,215.46 : 7,197.06 = 2,857.55 : x
  2. Step 2: Convert to fraction form
    5,215.46/7,197.06 = 2,857.55/x
  3. Step 3: Cross multiply
    5,215.46x = 7,197.06 × 2,857.55
  4. Step 4: Simplify right side
    5,215.46x = 20,565,958.80
  5. Step 5: Solve for x
    x = 20,565,958.80/5,215.46
  6. Step 6: Final answer
    x = 3,943.27

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.