Home / 7,989.53-11,985.30-4,286.68

Finding the Fourth Proportional to 7,989.53, 11,985.30 and 4,286.68

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Solution

The fourth proportional to 7,989.53, 11,985.30 and 4,286.68 is: 6,430.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,989.53 : 11,985.30 = 4,286.68 : x
  2. Step 2: Convert to fraction form
    7,989.53/11,985.30 = 4,286.68/x
  3. Step 3: Cross multiply
    7,989.53x = 11,985.30 × 4,286.68
  4. Step 4: Simplify right side
    7,989.53x = 51,377,115.84
  5. Step 5: Solve for x
    x = 51,377,115.84/7,989.53
  6. Step 6: Final answer
    x = 6,430.56

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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.