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Finding the Fourth Proportional to 7,122.54, 10,676.22 and 3,615.18

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Solution

The fourth proportional to 7,122.54, 10,676.22 and 3,615.18 is: 5,418.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,122.54 : 10,676.22 = 3,615.18 : x
  2. Step 2: Convert to fraction form
    7,122.54/10,676.22 = 3,615.18/x
  3. Step 3: Cross multiply
    7,122.54x = 10,676.22 × 3,615.18
  4. Step 4: Simplify right side
    7,122.54x = 38,596,457.02
  5. Step 5: Solve for x
    x = 38,596,457.02/7,122.54
  6. Step 6: Final answer
    x = 5,418.92

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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.