Home / 7,981.20-11,970.90-3,050.73

Finding the Fourth Proportional to 7,981.20, 11,970.90 and 3,050.73

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Solution

The fourth proportional to 7,981.20, 11,970.90 and 3,050.73 is: 4,575.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,981.20 : 11,970.90 = 3,050.73 : x
  2. Step 2: Convert to fraction form
    7,981.20/11,970.90 = 3,050.73/x
  3. Step 3: Cross multiply
    7,981.20x = 11,970.90 × 3,050.73
  4. Step 4: Simplify right side
    7,981.20x = 36,519,983.76
  5. Step 5: Solve for x
    x = 36,519,983.76/7,981.20
  6. Step 6: Final answer
    x = 4,575.75

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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.