Home / 7,984.48-11,977.86-2,789.08

Finding the Fourth Proportional to 7,984.48, 11,977.86 and 2,789.08

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Solution

The fourth proportional to 7,984.48, 11,977.86 and 2,789.08 is: 4,184.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,984.48 : 11,977.86 = 2,789.08 : x
  2. Step 2: Convert to fraction form
    7,984.48/11,977.86 = 2,789.08/x
  3. Step 3: Cross multiply
    7,984.48x = 11,977.86 × 2,789.08
  4. Step 4: Simplify right side
    7,984.48x = 33,407,209.77
  5. Step 5: Solve for x
    x = 33,407,209.77/7,984.48
  6. Step 6: Final answer
    x = 4,184.02

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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.