Home / 5,815.48-8,724.21-2,122.87

Finding the Fourth Proportional to 5,815.48, 8,724.21 and 2,122.87

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Solution

The fourth proportional to 5,815.48, 8,724.21 and 2,122.87 is: 3,184.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,815.48 : 8,724.21 = 2,122.87 : x
  2. Step 2: Convert to fraction form
    5,815.48/8,724.21 = 2,122.87/x
  3. Step 3: Cross multiply
    5,815.48x = 8,724.21 × 2,122.87
  4. Step 4: Simplify right side
    5,815.48x = 18,520,363.68
  5. Step 5: Solve for x
    x = 18,520,363.68/5,815.48
  6. Step 6: Final answer
    x = 3,184.67

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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.