Home / 7,968.96-11,977.74-7,781.85

Finding the Fourth Proportional to 7,968.96, 11,977.74 and 7,781.85

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Solution

The fourth proportional to 7,968.96, 11,977.74 and 7,781.85 is: 11,696.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,968.96 : 11,977.74 = 7,781.85 : x
  2. Step 2: Convert to fraction form
    7,968.96/11,977.74 = 7,781.85/x
  3. Step 3: Cross multiply
    7,968.96x = 11,977.74 × 7,781.85
  4. Step 4: Simplify right side
    7,968.96x = 93,208,976.02
  5. Step 5: Solve for x
    x = 93,208,976.02/7,968.96
  6. Step 6: Final answer
    x = 11,696.50

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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.