Home / 8,426.72-12,647.70-4,269.60

Finding the Fourth Proportional to 8,426.72, 12,647.70 and 4,269.60

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Solution

The fourth proportional to 8,426.72, 12,647.70 and 4,269.60 is: 6,408.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,426.72 : 12,647.70 = 4,269.60 : x
  2. Step 2: Convert to fraction form
    8,426.72/12,647.70 = 4,269.60/x
  3. Step 3: Cross multiply
    8,426.72x = 12,647.70 × 4,269.60
  4. Step 4: Simplify right side
    8,426.72x = 54,000,619.92
  5. Step 5: Solve for x
    x = 54,000,619.92/8,426.72
  6. Step 6: Final answer
    x = 6,408.26

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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.