Home / 5,679.63-8,519.48-1,981.85

Finding the Fourth Proportional to 5,679.63, 8,519.48 and 1,981.85

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Solution

The fourth proportional to 5,679.63, 8,519.48 and 1,981.85 is: 2,972.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,679.63 : 8,519.48 = 1,981.85 : x
  2. Step 2: Convert to fraction form
    5,679.63/8,519.48 = 1,981.85/x
  3. Step 3: Cross multiply
    5,679.63x = 8,519.48 × 1,981.85
  4. Step 4: Simplify right side
    5,679.63x = 16,884,286.36
  5. Step 5: Solve for x
    x = 16,884,286.36/5,679.63
  6. Step 6: Final answer
    x = 2,972.78

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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.