Home / 2,189.57-3,018.26-1,620.95

Finding the Fourth Proportional to 2,189.57, 3,018.26 and 1,620.95

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Solution

The fourth proportional to 2,189.57, 3,018.26 and 1,620.95 is: 2,234.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,189.57 : 3,018.26 = 1,620.95 : x
  2. Step 2: Convert to fraction form
    2,189.57/3,018.26 = 1,620.95/x
  3. Step 3: Cross multiply
    2,189.57x = 3,018.26 × 1,620.95
  4. Step 4: Simplify right side
    2,189.57x = 4,892,437.51
  5. Step 5: Solve for x
    x = 4,892,437.51/2,189.57
  6. Step 6: Final answer
    x = 2,234.43

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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.