Home / 8,669.02-12,995.77-3,121.06

Finding the Fourth Proportional to 8,669.02, 12,995.77 and 3,121.06

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Solution

The fourth proportional to 8,669.02, 12,995.77 and 3,121.06 is: 4,678.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,669.02 : 12,995.77 = 3,121.06 : x
  2. Step 2: Convert to fraction form
    8,669.02/12,995.77 = 3,121.06/x
  3. Step 3: Cross multiply
    8,669.02x = 12,995.77 × 3,121.06
  4. Step 4: Simplify right side
    8,669.02x = 40,560,577.92
  5. Step 5: Solve for x
    x = 40,560,577.92/8,669.02
  6. Step 6: Final answer
    x = 4,678.80

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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.