Home / 7,415.82-11,126.88-3,718.08

Finding the Fourth Proportional to 7,415.82, 11,126.88 and 3,718.08

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Solution

The fourth proportional to 7,415.82, 11,126.88 and 3,718.08 is: 5,578.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,415.82 : 11,126.88 = 3,718.08 : x
  2. Step 2: Convert to fraction form
    7,415.82/11,126.88 = 3,718.08/x
  3. Step 3: Cross multiply
    7,415.82x = 11,126.88 × 3,718.08
  4. Step 4: Simplify right side
    7,415.82x = 41,370,629.99
  5. Step 5: Solve for x
    x = 41,370,629.99/7,415.82
  6. Step 6: Final answer
    x = 5,578.70

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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.