Home / 2,190.48-3,285.72-2,141.88

Finding the Fourth Proportional to 2,190.48, 3,285.72 and 2,141.88

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Solution

The fourth proportional to 2,190.48, 3,285.72 and 2,141.88 is: 3,212.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,190.48 : 3,285.72 = 2,141.88 : x
  2. Step 2: Convert to fraction form
    2,190.48/3,285.72 = 2,141.88/x
  3. Step 3: Cross multiply
    2,190.48x = 3,285.72 × 2,141.88
  4. Step 4: Simplify right side
    2,190.48x = 7,037,617.95
  5. Step 5: Solve for x
    x = 7,037,617.95/2,190.48
  6. Step 6: Final answer
    x = 3,212.82

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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.