Home / 2,790.16-3,850.17-2,005.45

Finding the Fourth Proportional to 2,790.16, 3,850.17 and 2,005.45

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Solution

The fourth proportional to 2,790.16, 3,850.17 and 2,005.45 is: 2,767.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,790.16 : 3,850.17 = 2,005.45 : x
  2. Step 2: Convert to fraction form
    2,790.16/3,850.17 = 2,005.45/x
  3. Step 3: Cross multiply
    2,790.16x = 3,850.17 × 2,005.45
  4. Step 4: Simplify right side
    2,790.16x = 7,721,323.43
  5. Step 5: Solve for x
    x = 7,721,323.43/2,790.16
  6. Step 6: Final answer
    x = 2,767.34

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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.