Home / 3,390.86-5,091.41-2,768.93

Finding the Fourth Proportional to 3,390.86, 5,091.41 and 2,768.93

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Solution

The fourth proportional to 3,390.86, 5,091.41 and 2,768.93 is: 4,157.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,390.86 : 5,091.41 = 2,768.93 : x
  2. Step 2: Convert to fraction form
    3,390.86/5,091.41 = 2,768.93/x
  3. Step 3: Cross multiply
    3,390.86x = 5,091.41 × 2,768.93
  4. Step 4: Simplify right side
    3,390.86x = 14,097,771.51
  5. Step 5: Solve for x
    x = 14,097,771.51/3,390.86
  6. Step 6: Final answer
    x = 4,157.58

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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.