Home / 7,855.36-11,782.73-2,661.23

Finding the Fourth Proportional to 7,855.36, 11,782.73 and 2,661.23

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Solution

The fourth proportional to 7,855.36, 11,782.73 and 2,661.23 is: 3,991.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,855.36 : 11,782.73 = 2,661.23 : x
  2. Step 2: Convert to fraction form
    7,855.36/11,782.73 = 2,661.23/x
  3. Step 3: Cross multiply
    7,855.36x = 11,782.73 × 2,661.23
  4. Step 4: Simplify right side
    7,855.36x = 31,356,554.56
  5. Step 5: Solve for x
    x = 31,356,554.56/7,855.36
  6. Step 6: Final answer
    x = 3,991.74

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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.