Home / 8,647.21-12,972.89-2,803.84

Finding the Fourth Proportional to 8,647.21, 12,972.89 and 2,803.84

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Solution

The fourth proportional to 8,647.21, 12,972.89 and 2,803.84 is: 4,206.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,647.21 : 12,972.89 = 2,803.84 : x
  2. Step 2: Convert to fraction form
    8,647.21/12,972.89 = 2,803.84/x
  3. Step 3: Cross multiply
    8,647.21x = 12,972.89 × 2,803.84
  4. Step 4: Simplify right side
    8,647.21x = 36,373,907.90
  5. Step 5: Solve for x
    x = 36,373,907.90/8,647.21
  6. Step 6: Final answer
    x = 4,206.43

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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.