Home / 4,091.80-6,138.76-1,170.32

Finding the Fourth Proportional to 4,091.80, 6,138.76 and 1,170.32

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Solution

The fourth proportional to 4,091.80, 6,138.76 and 1,170.32 is: 1,755.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,091.80 : 6,138.76 = 1,170.32 : x
  2. Step 2: Convert to fraction form
    4,091.80/6,138.76 = 1,170.32/x
  3. Step 3: Cross multiply
    4,091.80x = 6,138.76 × 1,170.32
  4. Step 4: Simplify right side
    4,091.80x = 7,184,313.60
  5. Step 5: Solve for x
    x = 7,184,313.60/4,091.80
  6. Step 6: Final answer
    x = 1,755.78

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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.