Home / 7,420.75-11,121.41-4,135.39

Finding the Fourth Proportional to 7,420.75, 11,121.41 and 4,135.39

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Solution

The fourth proportional to 7,420.75, 11,121.41 and 4,135.39 is: 6,197.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,420.75 : 11,121.41 = 4,135.39 : x
  2. Step 2: Convert to fraction form
    7,420.75/11,121.41 = 4,135.39/x
  3. Step 3: Cross multiply
    7,420.75x = 11,121.41 × 4,135.39
  4. Step 4: Simplify right side
    7,420.75x = 45,991,347.02
  5. Step 5: Solve for x
    x = 45,991,347.02/7,420.75
  6. Step 6: Final answer
    x = 6,197.67

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1.5x scale

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.