Home / 8,669.92-13,001.80-3,121.77

Finding the Fourth Proportional to 8,669.92, 13,001.80 and 3,121.77

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Solution

The fourth proportional to 8,669.92, 13,001.80 and 3,121.77 is: 4,681.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,669.92 : 13,001.80 = 3,121.77 : x
  2. Step 2: Convert to fraction form
    8,669.92/13,001.80 = 3,121.77/x
  3. Step 3: Cross multiply
    8,669.92x = 13,001.80 × 3,121.77
  4. Step 4: Simplify right side
    8,669.92x = 40,588,607.97
  5. Step 5: Solve for x
    x = 40,588,607.97/8,669.92
  6. Step 6: Final answer
    x = 4,681.55

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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.