Home / 5,427.30-8,138.52-2,138.70

Finding the Fourth Proportional to 5,427.30, 8,138.52 and 2,138.70

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Solution

The fourth proportional to 5,427.30, 8,138.52 and 2,138.70 is: 3,207.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,427.30 : 8,138.52 = 2,138.70 : x
  2. Step 2: Convert to fraction form
    5,427.30/8,138.52 = 2,138.70/x
  3. Step 3: Cross multiply
    5,427.30x = 8,138.52 × 2,138.70
  4. Step 4: Simplify right side
    5,427.30x = 17,405,852.72
  5. Step 5: Solve for x
    x = 17,405,852.72/5,427.30
  6. Step 6: Final answer
    x = 3,207.09

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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.