Home / 5,186.20-7,156.56-2,828.29

Finding the Fourth Proportional to 5,186.20, 7,156.56 and 2,828.29

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Solution

The fourth proportional to 5,186.20, 7,156.56 and 2,828.29 is: 3,902.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,186.20 : 7,156.56 = 2,828.29 : x
  2. Step 2: Convert to fraction form
    5,186.20/7,156.56 = 2,828.29/x
  3. Step 3: Cross multiply
    5,186.20x = 7,156.56 × 2,828.29
  4. Step 4: Simplify right side
    5,186.20x = 20,240,827.08
  5. Step 5: Solve for x
    x = 20,240,827.08/5,186.20
  6. Step 6: Final answer
    x = 3,902.82

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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.