Home / 5,215.29-7,197.09-2,857.44

Finding the Fourth Proportional to 5,215.29, 7,197.09 and 2,857.44

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Solution

The fourth proportional to 5,215.29, 7,197.09 and 2,857.44 is: 3,943.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,215.29 : 7,197.09 = 2,857.44 : x
  2. Step 2: Convert to fraction form
    5,215.29/7,197.09 = 2,857.44/x
  3. Step 3: Cross multiply
    5,215.29x = 7,197.09 × 2,857.44
  4. Step 4: Simplify right side
    5,215.29x = 20,565,252.85
  5. Step 5: Solve for x
    x = 20,565,252.85/5,215.29
  6. Step 6: Final answer
    x = 3,943.26

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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.