Home / 8,145.77-12,219.48-2,222.78

Finding the Fourth Proportional to 8,145.77, 12,219.48 and 2,222.78

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Solution

The fourth proportional to 8,145.77, 12,219.48 and 2,222.78 is: 3,334.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,145.77 : 12,219.48 = 2,222.78 : x
  2. Step 2: Convert to fraction form
    8,145.77/12,219.48 = 2,222.78/x
  3. Step 3: Cross multiply
    8,145.77x = 12,219.48 × 2,222.78
  4. Step 4: Simplify right side
    8,145.77x = 27,161,154.66
  5. Step 5: Solve for x
    x = 27,161,154.66/8,145.77
  6. Step 6: Final answer
    x = 3,334.39

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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.