Home / 3,686.12-5,086.18-2,114.28

Finding the Fourth Proportional to 3,686.12, 5,086.18 and 2,114.28

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Solution

The fourth proportional to 3,686.12, 5,086.18 and 2,114.28 is: 2,917.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,686.12 : 5,086.18 = 2,114.28 : x
  2. Step 2: Convert to fraction form
    3,686.12/5,086.18 = 2,114.28/x
  3. Step 3: Cross multiply
    3,686.12x = 5,086.18 × 2,114.28
  4. Step 4: Simplify right side
    3,686.12x = 10,753,608.65
  5. Step 5: Solve for x
    x = 10,753,608.65/3,686.12
  6. Step 6: Final answer
    x = 2,917.32

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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.