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Finding the Fourth Proportional to 8,518.08, 12,779.01 and 3,324

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Solution

The fourth proportional to 8,518.08, 12,779.01 and 3,324 is: 4,986.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,518.08 : 12,779.01 = 3,324 : x
  2. Step 2: Convert to fraction form
    8,518.08/12,779.01 = 3,324/x
  3. Step 3: Cross multiply
    8,518.08x = 12,779.01 × 3,324
  4. Step 4: Simplify right side
    8,518.08x = 42,477,429.24
  5. Step 5: Solve for x
    x = 42,477,429.24/8,518.08
  6. Step 6: Final answer
    x = 4,986.74

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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.