Home / 5,426.26-8,138.95-2,139.35

Finding the Fourth Proportional to 5,426.26, 8,138.95 and 2,139.35

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Solution

The fourth proportional to 5,426.26, 8,138.95 and 2,139.35 is: 3,208.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,426.26 : 8,138.95 = 2,139.35 : x
  2. Step 2: Convert to fraction form
    5,426.26/8,138.95 = 2,139.35/x
  3. Step 3: Cross multiply
    5,426.26x = 8,138.95 × 2,139.35
  4. Step 4: Simplify right side
    5,426.26x = 17,412,016.64
  5. Step 5: Solve for x
    x = 17,412,016.64/5,426.26
  6. Step 6: Final answer
    x = 3,208.84

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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.