Home / 5,409.06-8,115.93-2,638.14

Finding the Fourth Proportional to 5,409.06, 8,115.93 and 2,638.14

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Solution

The fourth proportional to 5,409.06, 8,115.93 and 2,638.14 is: 3,958.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,409.06 : 8,115.93 = 2,638.14 : x
  2. Step 2: Convert to fraction form
    5,409.06/8,115.93 = 2,638.14/x
  3. Step 3: Cross multiply
    5,409.06x = 8,115.93 × 2,638.14
  4. Step 4: Simplify right side
    5,409.06x = 21,410,959.57
  5. Step 5: Solve for x
    x = 21,410,959.57/5,409.06
  6. Step 6: Final answer
    x = 3,958.35

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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.