Home / 2,190.58-3,285.87-1,636.90

Finding the Fourth Proportional to 2,190.58, 3,285.87 and 1,636.90

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Solution

The fourth proportional to 2,190.58, 3,285.87 and 1,636.90 is: 2,455.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,190.58 : 3,285.87 = 1,636.90 : x
  2. Step 2: Convert to fraction form
    2,190.58/3,285.87 = 1,636.90/x
  3. Step 3: Cross multiply
    2,190.58x = 3,285.87 × 1,636.90
  4. Step 4: Simplify right side
    2,190.58x = 5,378,640.60
  5. Step 5: Solve for x
    x = 5,378,640.60/2,190.58
  6. Step 6: Final answer
    x = 2,455.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.