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Finding the Fourth Proportional to 7,361.79, 11,040.30 and 2,430.30

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Solution

The fourth proportional to 7,361.79, 11,040.30 and 2,430.30 is: 3,644.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,361.79 : 11,040.30 = 2,430.30 : x
  2. Step 2: Convert to fraction form
    7,361.79/11,040.30 = 2,430.30/x
  3. Step 3: Cross multiply
    7,361.79x = 11,040.30 × 2,430.30
  4. Step 4: Simplify right side
    7,361.79x = 26,831,241.09
  5. Step 5: Solve for x
    x = 26,831,241.09/7,361.79
  6. Step 6: Final answer
    x = 3,644.66

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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.