Home / 5,436.20-8,136.30-3,951.20

Finding the Fourth Proportional to 5,436.20, 8,136.30 and 3,951.20

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Solution

The fourth proportional to 5,436.20, 8,136.30 and 3,951.20 is: 5,913.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,436.20 : 8,136.30 = 3,951.20 : x
  2. Step 2: Convert to fraction form
    5,436.20/8,136.30 = 3,951.20/x
  3. Step 3: Cross multiply
    5,436.20x = 8,136.30 × 3,951.20
  4. Step 4: Simplify right side
    5,436.20x = 32,148,148.56
  5. Step 5: Solve for x
    x = 32,148,148.56/5,436.20
  6. Step 6: Final answer
    x = 5,913.72

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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.