Home / 7,408.48-11,112.72-3,247.55

Finding the Fourth Proportional to 7,408.48, 11,112.72 and 3,247.55

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Solution

The fourth proportional to 7,408.48, 11,112.72 and 3,247.55 is: 4,871.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,408.48 : 11,112.72 = 3,247.55 : x
  2. Step 2: Convert to fraction form
    7,408.48/11,112.72 = 3,247.55/x
  3. Step 3: Cross multiply
    7,408.48x = 11,112.72 × 3,247.55
  4. Step 4: Simplify right side
    7,408.48x = 36,089,058.27
  5. Step 5: Solve for x
    x = 36,089,058.27/7,408.48
  6. Step 6: Final answer
    x = 4,871.32

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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.