Home / 7,811.82-11,717.62-1,968.40

Finding the Fourth Proportional to 7,811.82, 11,717.62 and 1,968.40

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Solution

The fourth proportional to 7,811.82, 11,717.62 and 1,968.40 is: 2,952.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,811.82 : 11,717.62 = 1,968.40 : x
  2. Step 2: Convert to fraction form
    7,811.82/11,717.62 = 1,968.40/x
  3. Step 3: Cross multiply
    7,811.82x = 11,717.62 × 1,968.40
  4. Step 4: Simplify right side
    7,811.82x = 23,064,963.21
  5. Step 5: Solve for x
    x = 23,064,963.21/7,811.82
  6. Step 6: Final answer
    x = 2,952.57

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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.