Home / 5,425.62-8,139.03-2,138.28

Finding the Fourth Proportional to 5,425.62, 8,139.03 and 2,138.28

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Solution

The fourth proportional to 5,425.62, 8,139.03 and 2,138.28 is: 3,207.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,425.62 : 8,139.03 = 2,138.28 : x
  2. Step 2: Convert to fraction form
    5,425.62/8,139.03 = 2,138.28/x
  3. Step 3: Cross multiply
    5,425.62x = 8,139.03 × 2,138.28
  4. Step 4: Simplify right side
    5,425.62x = 17,403,525.07
  5. Step 5: Solve for x
    x = 17,403,525.07/5,425.62
  6. Step 6: Final answer
    x = 3,207.66

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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.