Home / 7,983.06-11,980.80-5,209.02

Finding the Fourth Proportional to 7,983.06, 11,980.80 and 5,209.02

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Solution

The fourth proportional to 7,983.06, 11,980.80 and 5,209.02 is: 7,817.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,983.06 : 11,980.80 = 5,209.02 : x
  2. Step 2: Convert to fraction form
    7,983.06/11,980.80 = 5,209.02/x
  3. Step 3: Cross multiply
    7,983.06x = 11,980.80 × 5,209.02
  4. Step 4: Simplify right side
    7,983.06x = 62,408,226.82
  5. Step 5: Solve for x
    x = 62,408,226.82/7,983.06
  6. Step 6: Final answer
    x = 7,817.58

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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.