Home / 8,724.08-13,078.02-2,879.40

Finding the Fourth Proportional to 8,724.08, 13,078.02 and 2,879.40

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Solution

The fourth proportional to 8,724.08, 13,078.02 and 2,879.40 is: 4,316.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,724.08 : 13,078.02 = 2,879.40 : x
  2. Step 2: Convert to fraction form
    8,724.08/13,078.02 = 2,879.40/x
  3. Step 3: Cross multiply
    8,724.08x = 13,078.02 × 2,879.40
  4. Step 4: Simplify right side
    8,724.08x = 37,656,850.79
  5. Step 5: Solve for x
    x = 37,656,850.79/8,724.08
  6. Step 6: Final answer
    x = 4,316.43

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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.