Home / 3,115.64-4,290.09-2,917.33

Finding the Fourth Proportional to 3,115.64, 4,290.09 and 2,917.33

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Solution

The fourth proportional to 3,115.64, 4,290.09 and 2,917.33 is: 4,017.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,115.64 : 4,290.09 = 2,917.33 : x
  2. Step 2: Convert to fraction form
    3,115.64/4,290.09 = 2,917.33/x
  3. Step 3: Cross multiply
    3,115.64x = 4,290.09 × 2,917.33
  4. Step 4: Simplify right side
    3,115.64x = 12,515,608.26
  5. Step 5: Solve for x
    x = 12,515,608.26/3,115.64
  6. Step 6: Final answer
    x = 4,017.03

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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.