Home / 3,136.82-4,331.74-2,019.70

Finding the Fourth Proportional to 3,136.82, 4,331.74 and 2,019.70

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Solution

The fourth proportional to 3,136.82, 4,331.74 and 2,019.70 is: 2,789.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,136.82 : 4,331.74 = 2,019.70 : x
  2. Step 2: Convert to fraction form
    3,136.82/4,331.74 = 2,019.70/x
  3. Step 3: Cross multiply
    3,136.82x = 4,331.74 × 2,019.70
  4. Step 4: Simplify right side
    3,136.82x = 8,748,815.28
  5. Step 5: Solve for x
    x = 8,748,815.28/3,136.82
  6. Step 6: Final answer
    x = 2,789.07

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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.