Home / 8,271.20-12,408.61-4,578.81

Finding the Fourth Proportional to 8,271.20, 12,408.61 and 4,578.81

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Solution

The fourth proportional to 8,271.20, 12,408.61 and 4,578.81 is: 6,869.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,271.20 : 12,408.61 = 4,578.81 : x
  2. Step 2: Convert to fraction form
    8,271.20/12,408.61 = 4,578.81/x
  3. Step 3: Cross multiply
    8,271.20x = 12,408.61 × 4,578.81
  4. Step 4: Simplify right side
    8,271.20x = 56,816,667.55
  5. Step 5: Solve for x
    x = 56,816,667.55/8,271.20
  6. Step 6: Final answer
    x = 6,869.22

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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.