Home / 5,215.08-7,196.75-2,857.22

Finding the Fourth Proportional to 5,215.08, 7,196.75 and 2,857.22

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Solution

The fourth proportional to 5,215.08, 7,196.75 and 2,857.22 is: 3,942.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,215.08 : 7,196.75 = 2,857.22 : x
  2. Step 2: Convert to fraction form
    5,215.08/7,196.75 = 2,857.22/x
  3. Step 3: Cross multiply
    5,215.08x = 7,196.75 × 2,857.22
  4. Step 4: Simplify right side
    5,215.08x = 20,562,647.77
  5. Step 5: Solve for x
    x = 20,562,647.77/5,215.08
  6. Step 6: Final answer
    x = 3,942.92

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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.