Home / 7,919.51-11,877.23-2,987.69

Finding the Fourth Proportional to 7,919.51, 11,877.23 and 2,987.69

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Solution

The fourth proportional to 7,919.51, 11,877.23 and 2,987.69 is: 4,480.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,919.51 : 11,877.23 = 2,987.69 : x
  2. Step 2: Convert to fraction form
    7,919.51/11,877.23 = 2,987.69/x
  3. Step 3: Cross multiply
    7,919.51x = 11,877.23 × 2,987.69
  4. Step 4: Simplify right side
    7,919.51x = 35,485,406.97
  5. Step 5: Solve for x
    x = 35,485,406.97/7,919.51
  6. Step 6: Final answer
    x = 4,480.76

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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.