Home / 7,119.78-10,678.86-1,926.06

Finding the Fourth Proportional to 7,119.78, 10,678.86 and 1,926.06

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Solution

The fourth proportional to 7,119.78, 10,678.86 and 1,926.06 is: 2,888.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,119.78 : 10,678.86 = 1,926.06 : x
  2. Step 2: Convert to fraction form
    7,119.78/10,678.86 = 1,926.06/x
  3. Step 3: Cross multiply
    7,119.78x = 10,678.86 × 1,926.06
  4. Step 4: Simplify right side
    7,119.78x = 20,568,125.09
  5. Step 5: Solve for x
    x = 20,568,125.09/7,119.78
  6. Step 6: Final answer
    x = 2,888.87

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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.