Home / 5,215.13-7,196.87-2,857.32

Finding the Fourth Proportional to 5,215.13, 7,196.87 and 2,857.32

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Solution

The fourth proportional to 5,215.13, 7,196.87 and 2,857.32 is: 3,943.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,215.13 : 7,196.87 = 2,857.32 : x
  2. Step 2: Convert to fraction form
    5,215.13/7,196.87 = 2,857.32/x
  3. Step 3: Cross multiply
    5,215.13x = 7,196.87 × 2,857.32
  4. Step 4: Simplify right side
    5,215.13x = 20,563,767.73
  5. Step 5: Solve for x
    x = 20,563,767.73/5,215.13
  6. Step 6: Final answer
    x = 3,943.10

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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.