Home / 5,425.20-8,136.24-1,530

Finding the Fourth Proportional to 5,425.20, 8,136.24 and 1,530

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Solution

The fourth proportional to 5,425.20, 8,136.24 and 1,530 is: 2,294.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,425.20 : 8,136.24 = 1,530 : x
  2. Step 2: Convert to fraction form
    5,425.20/8,136.24 = 1,530/x
  3. Step 3: Cross multiply
    5,425.20x = 8,136.24 × 1,530
  4. Step 4: Simplify right side
    5,425.20x = 12,448,447.20
  5. Step 5: Solve for x
    x = 12,448,447.20/5,425.20
  6. Step 6: Final answer
    x = 2,294.56

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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.