Home / 3,690.28-5,092.53-2,118.70

Finding the Fourth Proportional to 3,690.28, 5,092.53 and 2,118.70

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Solution

The fourth proportional to 3,690.28, 5,092.53 and 2,118.70 is: 2,923.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,690.28 : 5,092.53 = 2,118.70 : x
  2. Step 2: Convert to fraction form
    3,690.28/5,092.53 = 2,118.70/x
  3. Step 3: Cross multiply
    3,690.28x = 5,092.53 × 2,118.70
  4. Step 4: Simplify right side
    3,690.28x = 10,789,543.31
  5. Step 5: Solve for x
    x = 10,789,543.31/3,690.28
  6. Step 6: Final answer
    x = 2,923.77

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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.