Home / 7,942.51-11,890.36-5,871.75

Finding the Fourth Proportional to 7,942.51, 11,890.36 and 5,871.75

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Solution

The fourth proportional to 7,942.51, 11,890.36 and 5,871.75 is: 8,790.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,942.51 : 11,890.36 = 5,871.75 : x
  2. Step 2: Convert to fraction form
    7,942.51/11,890.36 = 5,871.75/x
  3. Step 3: Cross multiply
    7,942.51x = 11,890.36 × 5,871.75
  4. Step 4: Simplify right side
    7,942.51x = 69,817,221.33
  5. Step 5: Solve for x
    x = 69,817,221.33/7,942.51
  6. Step 6: Final answer
    x = 8,790.32

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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.