Home / 3,037.80-4,189.38-1,990.44

Finding the Fourth Proportional to 3,037.80, 4,189.38 and 1,990.44

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Solution

The fourth proportional to 3,037.80, 4,189.38 and 1,990.44 is: 2,744.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,037.80 : 4,189.38 = 1,990.44 : x
  2. Step 2: Convert to fraction form
    3,037.80/4,189.38 = 1,990.44/x
  3. Step 3: Cross multiply
    3,037.80x = 4,189.38 × 1,990.44
  4. Step 4: Simplify right side
    3,037.80x = 8,338,709.53
  5. Step 5: Solve for x
    x = 8,338,709.53/3,037.80
  6. Step 6: Final answer
    x = 2,744.98

Related Problems

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Half scale
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Double scale
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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.