Home / 8,669.94-13,001.72-3,121.79

Finding the Fourth Proportional to 8,669.94, 13,001.72 and 3,121.79

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Solution

The fourth proportional to 8,669.94, 13,001.72 and 3,121.79 is: 4,681.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,669.94 : 13,001.72 = 3,121.79 : x
  2. Step 2: Convert to fraction form
    8,669.94/13,001.72 = 3,121.79/x
  3. Step 3: Cross multiply
    8,669.94x = 13,001.72 × 3,121.79
  4. Step 4: Simplify right side
    8,669.94x = 40,588,632.00
  5. Step 5: Solve for x
    x = 40,588,632.00/8,669.94
  6. Step 6: Final answer
    x = 4,681.54

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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.