Home / 2,145.09-2,960.33-1,620.21

Finding the Fourth Proportional to 2,145.09, 2,960.33 and 1,620.21

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Solution

The fourth proportional to 2,145.09, 2,960.33 and 1,620.21 is: 2,235.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,145.09 : 2,960.33 = 1,620.21 : x
  2. Step 2: Convert to fraction form
    2,145.09/2,960.33 = 1,620.21/x
  3. Step 3: Cross multiply
    2,145.09x = 2,960.33 × 1,620.21
  4. Step 4: Simplify right side
    2,145.09x = 4,796,348.17
  5. Step 5: Solve for x
    x = 4,796,348.17/2,145.09
  6. Step 6: Final answer
    x = 2,235.97

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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.