Home / 5,390.20-8,069.10-3,197.80

Finding the Fourth Proportional to 5,390.20, 8,069.10 and 3,197.80

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Solution

The fourth proportional to 5,390.20, 8,069.10 and 3,197.80 is: 4,787.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,390.20 : 8,069.10 = 3,197.80 : x
  2. Step 2: Convert to fraction form
    5,390.20/8,069.10 = 3,197.80/x
  3. Step 3: Cross multiply
    5,390.20x = 8,069.10 × 3,197.80
  4. Step 4: Simplify right side
    5,390.20x = 25,803,367.98
  5. Step 5: Solve for x
    x = 25,803,367.98/5,390.20
  6. Step 6: Final answer
    x = 4,787.09

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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.