Home / 7,980.18-11,975.73-2,786.05

Finding the Fourth Proportional to 7,980.18, 11,975.73 and 2,786.05

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Solution

The fourth proportional to 7,980.18, 11,975.73 and 2,786.05 is: 4,180.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,980.18 : 11,975.73 = 2,786.05 : x
  2. Step 2: Convert to fraction form
    7,980.18/11,975.73 = 2,786.05/x
  3. Step 3: Cross multiply
    7,980.18x = 11,975.73 × 2,786.05
  4. Step 4: Simplify right side
    7,980.18x = 33,364,968.64
  5. Step 5: Solve for x
    x = 33,364,968.64/7,980.18
  6. Step 6: Final answer
    x = 4,180.98

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1.5x scale

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.