Home / 4,086.91-6,129.10-2,138.05

Finding the Fourth Proportional to 4,086.91, 6,129.10 and 2,138.05

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Solution

The fourth proportional to 4,086.91, 6,129.10 and 2,138.05 is: 3,206.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,086.91 : 6,129.10 = 2,138.05 : x
  2. Step 2: Convert to fraction form
    4,086.91/6,129.10 = 2,138.05/x
  3. Step 3: Cross multiply
    4,086.91x = 6,129.10 × 2,138.05
  4. Step 4: Simplify right side
    4,086.91x = 13,104,322.26
  5. Step 5: Solve for x
    x = 13,104,322.26/4,086.91
  6. Step 6: Final answer
    x = 3,206.41

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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.