Home / 7,408.20-11,090.70-6,630.60

Finding the Fourth Proportional to 7,408.20, 11,090.70 and 6,630.60

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Solution

The fourth proportional to 7,408.20, 11,090.70 and 6,630.60 is: 9,926.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,408.20 : 11,090.70 = 6,630.60 : x
  2. Step 2: Convert to fraction form
    7,408.20/11,090.70 = 6,630.60/x
  3. Step 3: Cross multiply
    7,408.20x = 11,090.70 × 6,630.60
  4. Step 4: Simplify right side
    7,408.20x = 73,537,995.42
  5. Step 5: Solve for x
    x = 73,537,995.42/7,408.20
  6. Step 6: Final answer
    x = 9,926.57

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.