Home / 8,185.23-12,279.03-2,989.89

Finding the Fourth Proportional to 8,185.23, 12,279.03 and 2,989.89

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Solution

The fourth proportional to 8,185.23, 12,279.03 and 2,989.89 is: 4,485.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,185.23 : 12,279.03 = 2,989.89 : x
  2. Step 2: Convert to fraction form
    8,185.23/12,279.03 = 2,989.89/x
  3. Step 3: Cross multiply
    8,185.23x = 12,279.03 × 2,989.89
  4. Step 4: Simplify right side
    8,185.23x = 36,712,949.01
  5. Step 5: Solve for x
    x = 36,712,949.01/8,185.23
  6. Step 6: Final answer
    x = 4,485.27

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1.5x scale

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.