Home / 2,878.79-4,323.36-2,647.23

Finding the Fourth Proportional to 2,878.79, 4,323.36 and 2,647.23

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Solution

The fourth proportional to 2,878.79, 4,323.36 and 2,647.23 is: 3,975.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,878.79 : 4,323.36 = 2,647.23 : x
  2. Step 2: Convert to fraction form
    2,878.79/4,323.36 = 2,647.23/x
  3. Step 3: Cross multiply
    2,878.79x = 4,323.36 × 2,647.23
  4. Step 4: Simplify right side
    2,878.79x = 11,444,928.29
  5. Step 5: Solve for x
    x = 11,444,928.29/2,878.79
  6. Step 6: Final answer
    x = 3,975.61

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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.