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Finding the Fourth Proportional to 5,719.08, 7,891.40 and 3,361.68

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Solution

The fourth proportional to 5,719.08, 7,891.40 and 3,361.68 is: 4,638.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,719.08 : 7,891.40 = 3,361.68 : x
  2. Step 2: Convert to fraction form
    5,719.08/7,891.40 = 3,361.68/x
  3. Step 3: Cross multiply
    5,719.08x = 7,891.40 × 3,361.68
  4. Step 4: Simplify right side
    5,719.08x = 26,528,361.55
  5. Step 5: Solve for x
    x = 26,528,361.55/5,719.08
  6. Step 6: Final answer
    x = 4,638.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.