Home / 7,825.12-11,737.68-2,630.80

Finding the Fourth Proportional to 7,825.12, 11,737.68 and 2,630.80

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Solution

The fourth proportional to 7,825.12, 11,737.68 and 2,630.80 is: 3,946.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,825.12 : 11,737.68 = 2,630.80 : x
  2. Step 2: Convert to fraction form
    7,825.12/11,737.68 = 2,630.80/x
  3. Step 3: Cross multiply
    7,825.12x = 11,737.68 × 2,630.80
  4. Step 4: Simplify right side
    7,825.12x = 30,879,488.54
  5. Step 5: Solve for x
    x = 30,879,488.54/7,825.12
  6. Step 6: Final answer
    x = 3,946.20

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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.