Home / 7,986.09-11,980.68-3,603.55

Finding the Fourth Proportional to 7,986.09, 11,980.68 and 3,603.55

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Solution

The fourth proportional to 7,986.09, 11,980.68 and 3,603.55 is: 5,406.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,986.09 : 11,980.68 = 3,603.55 : x
  2. Step 2: Convert to fraction form
    7,986.09/11,980.68 = 3,603.55/x
  3. Step 3: Cross multiply
    7,986.09x = 11,980.68 × 3,603.55
  4. Step 4: Simplify right side
    7,986.09x = 43,173,005.67
  5. Step 5: Solve for x
    x = 43,173,005.67/7,986.09
  6. Step 6: Final answer
    x = 5,406.02

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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.