Home / 2,205.12-3,042.16-1,645.92

Finding the Fourth Proportional to 2,205.12, 3,042.16 and 1,645.92

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Solution

The fourth proportional to 2,205.12, 3,042.16 and 1,645.92 is: 2,270.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,205.12 : 3,042.16 = 1,645.92 : x
  2. Step 2: Convert to fraction form
    2,205.12/3,042.16 = 1,645.92/x
  3. Step 3: Cross multiply
    2,205.12x = 3,042.16 × 1,645.92
  4. Step 4: Simplify right side
    2,205.12x = 5,007,151.99
  5. Step 5: Solve for x
    x = 5,007,151.99/2,205.12
  6. Step 6: Final answer
    x = 2,270.69

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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.