Home / 5,619.14-8,424-3,120.19

Finding the Fourth Proportional to 5,619.14, 8,424 and 3,120.19

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Solution

The fourth proportional to 5,619.14, 8,424 and 3,120.19 is: 4,677.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,619.14 : 8,424 = 3,120.19 : x
  2. Step 2: Convert to fraction form
    5,619.14/8,424 = 3,120.19/x
  3. Step 3: Cross multiply
    5,619.14x = 8,424 × 3,120.19
  4. Step 4: Simplify right side
    5,619.14x = 26,284,459.50
  5. Step 5: Solve for x
    x = 26,284,459.50/5,619.14
  6. Step 6: Final answer
    x = 4,677.67

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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.