Home / 5,185.80-7,156.32-2,828.04

Finding the Fourth Proportional to 5,185.80, 7,156.32 and 2,828.04

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Solution

The fourth proportional to 5,185.80, 7,156.32 and 2,828.04 is: 3,902.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,185.80 : 7,156.32 = 2,828.04 : x
  2. Step 2: Convert to fraction form
    5,185.80/7,156.32 = 2,828.04/x
  3. Step 3: Cross multiply
    5,185.80x = 7,156.32 × 2,828.04
  4. Step 4: Simplify right side
    5,185.80x = 20,238,359.21
  5. Step 5: Solve for x
    x = 20,238,359.21/5,185.80
  6. Step 6: Final answer
    x = 3,902.65

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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.