Home / 4,091.58-6,138.99-2,145.15

Finding the Fourth Proportional to 4,091.58, 6,138.99 and 2,145.15

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Solution

The fourth proportional to 4,091.58, 6,138.99 and 2,145.15 is: 3,218.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,091.58 : 6,138.99 = 2,145.15 : x
  2. Step 2: Convert to fraction form
    4,091.58/6,138.99 = 2,145.15/x
  3. Step 3: Cross multiply
    4,091.58x = 6,138.99 × 2,145.15
  4. Step 4: Simplify right side
    4,091.58x = 13,169,054.40
  5. Step 5: Solve for x
    x = 13,169,054.40/4,091.58
  6. Step 6: Final answer
    x = 3,218.57

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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.