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Finding the Fourth Proportional to 7,408.40, 11,114.40 and 2,214.26

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Solution

The fourth proportional to 7,408.40, 11,114.40 and 2,214.26 is: 3,321.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,408.40 : 11,114.40 = 2,214.26 : x
  2. Step 2: Convert to fraction form
    7,408.40/11,114.40 = 2,214.26/x
  3. Step 3: Cross multiply
    7,408.40x = 11,114.40 × 2,214.26
  4. Step 4: Simplify right side
    7,408.40x = 24,610,171.34
  5. Step 5: Solve for x
    x = 24,610,171.34/7,408.40
  6. Step 6: Final answer
    x = 3,321.93

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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.