Home / 7,020.75-10,533.87-2,638.56

Finding the Fourth Proportional to 7,020.75, 10,533.87 and 2,638.56

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Solution

The fourth proportional to 7,020.75, 10,533.87 and 2,638.56 is: 3,958.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,020.75 : 10,533.87 = 2,638.56 : x
  2. Step 2: Convert to fraction form
    7,020.75/10,533.87 = 2,638.56/x
  3. Step 3: Cross multiply
    7,020.75x = 10,533.87 × 2,638.56
  4. Step 4: Simplify right side
    7,020.75x = 27,794,248.03
  5. Step 5: Solve for x
    x = 27,794,248.03/7,020.75
  6. Step 6: Final answer
    x = 3,958.87

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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.