Home / 7,869.86-11,795.93-3,431.26

Finding the Fourth Proportional to 7,869.86, 11,795.93 and 3,431.26

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Solution

The fourth proportional to 7,869.86, 11,795.93 and 3,431.26 is: 5,143.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,869.86 : 11,795.93 = 3,431.26 : x
  2. Step 2: Convert to fraction form
    7,869.86/11,795.93 = 3,431.26/x
  3. Step 3: Cross multiply
    7,869.86x = 11,795.93 × 3,431.26
  4. Step 4: Simplify right side
    7,869.86x = 40,474,913.23
  5. Step 5: Solve for x
    x = 40,474,913.23/7,869.86
  6. Step 6: Final answer
    x = 5,143.03

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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.