Home / 2,790.33-4,188.57-1,621.65

Finding the Fourth Proportional to 2,790.33, 4,188.57 and 1,621.65

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Solution

The fourth proportional to 2,790.33, 4,188.57 and 1,621.65 is: 2,434.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,790.33 : 4,188.57 = 1,621.65 : x
  2. Step 2: Convert to fraction form
    2,790.33/4,188.57 = 1,621.65/x
  3. Step 3: Cross multiply
    2,790.33x = 4,188.57 × 1,621.65
  4. Step 4: Simplify right side
    2,790.33x = 6,792,394.54
  5. Step 5: Solve for x
    x = 6,792,394.54/2,790.33
  6. Step 6: Final answer
    x = 2,434.26

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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.