Home / 2,918.25-4,027.19-2,172.85

Finding the Fourth Proportional to 2,918.25, 4,027.19 and 2,172.85

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Solution

The fourth proportional to 2,918.25, 4,027.19 and 2,172.85 is: 2,998.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,918.25 : 4,027.19 = 2,172.85 : x
  2. Step 2: Convert to fraction form
    2,918.25/4,027.19 = 2,172.85/x
  3. Step 3: Cross multiply
    2,918.25x = 4,027.19 × 2,172.85
  4. Step 4: Simplify right side
    2,918.25x = 8,750,458.86
  5. Step 5: Solve for x
    x = 8,750,458.86/2,918.25
  6. Step 6: Final answer
    x = 2,998.53

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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.