Home / 7,801.86-11,704.31-2,871.54

Finding the Fourth Proportional to 7,801.86, 11,704.31 and 2,871.54

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Solution

The fourth proportional to 7,801.86, 11,704.31 and 2,871.54 is: 4,307.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,801.86 : 11,704.31 = 2,871.54 : x
  2. Step 2: Convert to fraction form
    7,801.86/11,704.31 = 2,871.54/x
  3. Step 3: Cross multiply
    7,801.86x = 11,704.31 × 2,871.54
  4. Step 4: Simplify right side
    7,801.86x = 33,609,394.34
  5. Step 5: Solve for x
    x = 33,609,394.34/7,801.86
  6. Step 6: Final answer
    x = 4,307.87

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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.