Home / 7,986.36-11,980.98-2,721.08

Finding the Fourth Proportional to 7,986.36, 11,980.98 and 2,721.08

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Solution

The fourth proportional to 7,986.36, 11,980.98 and 2,721.08 is: 4,082.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,986.36 : 11,980.98 = 2,721.08 : x
  2. Step 2: Convert to fraction form
    7,986.36/11,980.98 = 2,721.08/x
  3. Step 3: Cross multiply
    7,986.36x = 11,980.98 × 2,721.08
  4. Step 4: Simplify right side
    7,986.36x = 32,601,205.06
  5. Step 5: Solve for x
    x = 32,601,205.06/7,986.36
  6. Step 6: Final answer
    x = 4,082.11

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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.