Home / 3,938.08-5,431.52-2,611.36

Finding the Fourth Proportional to 3,938.08, 5,431.52 and 2,611.36

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Solution

The fourth proportional to 3,938.08, 5,431.52 and 2,611.36 is: 3,601.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,938.08 : 5,431.52 = 2,611.36 : x
  2. Step 2: Convert to fraction form
    3,938.08/5,431.52 = 2,611.36/x
  3. Step 3: Cross multiply
    3,938.08x = 5,431.52 × 2,611.36
  4. Step 4: Simplify right side
    3,938.08x = 14,183,654.07
  5. Step 5: Solve for x
    x = 14,183,654.07/3,938.08
  6. Step 6: Final answer
    x = 3,601.67

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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.