Home / 5,729.00-7,905.74-3,211.38

Finding the Fourth Proportional to 5,729.00, 7,905.74 and 3,211.38

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Solution

The fourth proportional to 5,729.00, 7,905.74 and 3,211.38 is: 4,431.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,729.00 : 7,905.74 = 3,211.38 : x
  2. Step 2: Convert to fraction form
    5,729.00/7,905.74 = 3,211.38/x
  3. Step 3: Cross multiply
    5,729.00x = 7,905.74 × 3,211.38
  4. Step 4: Simplify right side
    5,729.00x = 25,388,319.26
  5. Step 5: Solve for x
    x = 25,388,319.26/5,729.00
  6. Step 6: Final answer
    x = 4,431.55

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1.5x scale

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.