Home / 7,271.45-10,905.75-2,005.10

Finding the Fourth Proportional to 7,271.45, 10,905.75 and 2,005.10

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Solution

The fourth proportional to 7,271.45, 10,905.75 and 2,005.10 is: 3,007.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,271.45 : 10,905.75 = 2,005.10 : x
  2. Step 2: Convert to fraction form
    7,271.45/10,905.75 = 2,005.10/x
  3. Step 3: Cross multiply
    7,271.45x = 10,905.75 × 2,005.10
  4. Step 4: Simplify right side
    7,271.45x = 21,867,119.33
  5. Step 5: Solve for x
    x = 21,867,119.33/7,271.45
  6. Step 6: Final answer
    x = 3,007.26

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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.