Home / 7,718.20-11,570.37-2,786.68

Finding the Fourth Proportional to 7,718.20, 11,570.37 and 2,786.68

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Solution

The fourth proportional to 7,718.20, 11,570.37 and 2,786.68 is: 4,177.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,718.20 : 11,570.37 = 2,786.68 : x
  2. Step 2: Convert to fraction form
    7,718.20/11,570.37 = 2,786.68/x
  3. Step 3: Cross multiply
    7,718.20x = 11,570.37 × 2,786.68
  4. Step 4: Simplify right side
    7,718.20x = 32,242,918.67
  5. Step 5: Solve for x
    x = 32,242,918.67/7,718.20
  6. Step 6: Final answer
    x = 4,177.52

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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.