Home / 7,815.81-11,723.06-3,072.07

Finding the Fourth Proportional to 7,815.81, 11,723.06 and 3,072.07

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Solution

The fourth proportional to 7,815.81, 11,723.06 and 3,072.07 is: 4,607.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,815.81 : 11,723.06 = 3,072.07 : x
  2. Step 2: Convert to fraction form
    7,815.81/11,723.06 = 3,072.07/x
  3. Step 3: Cross multiply
    7,815.81x = 11,723.06 × 3,072.07
  4. Step 4: Simplify right side
    7,815.81x = 36,014,016.27
  5. Step 5: Solve for x
    x = 36,014,016.27/7,815.81
  6. Step 6: Final answer
    x = 4,607.84

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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.