Home / 8,316.86-12,475.26-3,385.40

Finding the Fourth Proportional to 8,316.86, 12,475.26 and 3,385.40

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Solution

The fourth proportional to 8,316.86, 12,475.26 and 3,385.40 is: 5,078.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,316.86 : 12,475.26 = 3,385.40 : x
  2. Step 2: Convert to fraction form
    8,316.86/12,475.26 = 3,385.40/x
  3. Step 3: Cross multiply
    8,316.86x = 12,475.26 × 3,385.40
  4. Step 4: Simplify right side
    8,316.86x = 42,233,745.20
  5. Step 5: Solve for x
    x = 42,233,745.20/8,316.86
  6. Step 6: Final answer
    x = 5,078.09

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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.