Home / 5,137.30-7,704.90-1,438.60

Finding the Fourth Proportional to 5,137.30, 7,704.90 and 1,438.60

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Solution

The fourth proportional to 5,137.30, 7,704.90 and 1,438.60 is: 2,157.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,137.30 : 7,704.90 = 1,438.60 : x
  2. Step 2: Convert to fraction form
    5,137.30/7,704.90 = 1,438.60/x
  3. Step 3: Cross multiply
    5,137.30x = 7,704.90 × 1,438.60
  4. Step 4: Simplify right side
    5,137.30x = 11,084,269.14
  5. Step 5: Solve for x
    x = 11,084,269.14/5,137.30
  6. Step 6: Final answer
    x = 2,157.61

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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.