Home / 5,679.60-8,519.43-1,981.81

Finding the Fourth Proportional to 5,679.60, 8,519.43 and 1,981.81

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Solution

The fourth proportional to 5,679.60, 8,519.43 and 1,981.81 is: 2,972.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,679.60 : 8,519.43 = 1,981.81 : x
  2. Step 2: Convert to fraction form
    5,679.60/8,519.43 = 1,981.81/x
  3. Step 3: Cross multiply
    5,679.60x = 8,519.43 × 1,981.81
  4. Step 4: Simplify right side
    5,679.60x = 16,883,881.66
  5. Step 5: Solve for x
    x = 16,883,881.66/5,679.60
  6. Step 6: Final answer
    x = 2,972.73

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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.