Home / 5,423.07-8,129.10-2,138.49

Finding the Fourth Proportional to 5,423.07, 8,129.10 and 2,138.49

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Solution

The fourth proportional to 5,423.07, 8,129.10 and 2,138.49 is: 3,205.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,423.07 : 8,129.10 = 2,138.49 : x
  2. Step 2: Convert to fraction form
    5,423.07/8,129.10 = 2,138.49/x
  3. Step 3: Cross multiply
    5,423.07x = 8,129.10 × 2,138.49
  4. Step 4: Simplify right side
    5,423.07x = 17,383,999.06
  5. Step 5: Solve for x
    x = 17,383,999.06/5,423.07
  6. Step 6: Final answer
    x = 3,205.56

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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.