Home / 8,284.08-12,420.24-3,899.28

Finding the Fourth Proportional to 8,284.08, 12,420.24 and 3,899.28

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Solution

The fourth proportional to 8,284.08, 12,420.24 and 3,899.28 is: 5,846.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,284.08 : 12,420.24 = 3,899.28 : x
  2. Step 2: Convert to fraction form
    8,284.08/12,420.24 = 3,899.28/x
  3. Step 3: Cross multiply
    8,284.08x = 12,420.24 × 3,899.28
  4. Step 4: Simplify right side
    8,284.08x = 48,429,993.43
  5. Step 5: Solve for x
    x = 48,429,993.43/8,284.08
  6. Step 6: Final answer
    x = 5,846.15

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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.