Home / 5,427.24-8,145.90-2,142.60

Finding the Fourth Proportional to 5,427.24, 8,145.90 and 2,142.60

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Solution

The fourth proportional to 5,427.24, 8,145.90 and 2,142.60 is: 3,215.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,427.24 : 8,145.90 = 2,142.60 : x
  2. Step 2: Convert to fraction form
    5,427.24/8,145.90 = 2,142.60/x
  3. Step 3: Cross multiply
    5,427.24x = 8,145.90 × 2,142.60
  4. Step 4: Simplify right side
    5,427.24x = 17,453,405.34
  5. Step 5: Solve for x
    x = 17,453,405.34/5,427.24
  6. Step 6: Final answer
    x = 3,215.89

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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.