Home / 8,142.79-12,214.40-2,219.73

Finding the Fourth Proportional to 8,142.79, 12,214.40 and 2,219.73

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Solution

The fourth proportional to 8,142.79, 12,214.40 and 2,219.73 is: 3,329.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,142.79 : 12,214.40 = 2,219.73 : x
  2. Step 2: Convert to fraction form
    8,142.79/12,214.40 = 2,219.73/x
  3. Step 3: Cross multiply
    8,142.79x = 12,214.40 × 2,219.73
  4. Step 4: Simplify right side
    8,142.79x = 27,112,597.94
  5. Step 5: Solve for x
    x = 27,112,597.94/8,142.79
  6. Step 6: Final answer
    x = 3,329.64

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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.