Home / 3,690.12-5,092.58-2,118.20

Finding the Fourth Proportional to 3,690.12, 5,092.58 and 2,118.20

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Solution

The fourth proportional to 3,690.12, 5,092.58 and 2,118.20 is: 2,923.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,690.12 : 5,092.58 = 2,118.20 : x
  2. Step 2: Convert to fraction form
    3,690.12/5,092.58 = 2,118.20/x
  3. Step 3: Cross multiply
    3,690.12x = 5,092.58 × 2,118.20
  4. Step 4: Simplify right side
    3,690.12x = 10,787,102.96
  5. Step 5: Solve for x
    x = 10,787,102.96/3,690.12
  6. Step 6: Final answer
    x = 2,923.24

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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.