Home / 5,719.98-7,890.93-3,729.81

Finding the Fourth Proportional to 5,719.98, 7,890.93 and 3,729.81

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Solution

The fourth proportional to 5,719.98, 7,890.93 and 3,729.81 is: 5,145.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,719.98 : 7,890.93 = 3,729.81 : x
  2. Step 2: Convert to fraction form
    5,719.98/7,890.93 = 3,729.81/x
  3. Step 3: Cross multiply
    5,719.98x = 7,890.93 × 3,729.81
  4. Step 4: Simplify right side
    5,719.98x = 29,431,669.62
  5. Step 5: Solve for x
    x = 29,431,669.62/5,719.98
  6. Step 6: Final answer
    x = 5,145.41

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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.