Home / 7,278.12-10,918.74-2,661

Finding the Fourth Proportional to 7,278.12, 10,918.74 and 2,661

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Solution

The fourth proportional to 7,278.12, 10,918.74 and 2,661 is: 3,992.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,278.12 : 10,918.74 = 2,661 : x
  2. Step 2: Convert to fraction form
    7,278.12/10,918.74 = 2,661/x
  3. Step 3: Cross multiply
    7,278.12x = 10,918.74 × 2,661
  4. Step 4: Simplify right side
    7,278.12x = 29,054,767.14
  5. Step 5: Solve for x
    x = 29,054,767.14/7,278.12
  6. Step 6: Final answer
    x = 3,992.07

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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.