Home / 5,618.57-8,425.42-1,920.11

Finding the Fourth Proportional to 5,618.57, 8,425.42 and 1,920.11

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Solution

The fourth proportional to 5,618.57, 8,425.42 and 1,920.11 is: 2,879.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,618.57 : 8,425.42 = 1,920.11 : x
  2. Step 2: Convert to fraction form
    5,618.57/8,425.42 = 1,920.11/x
  3. Step 3: Cross multiply
    5,618.57x = 8,425.42 × 1,920.11
  4. Step 4: Simplify right side
    5,618.57x = 16,177,686.27
  5. Step 5: Solve for x
    x = 16,177,686.27/5,618.57
  6. Step 6: Final answer
    x = 2,879.33

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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.