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Finding the Fourth Proportional to 8,559.84, 12,840.83 and 2,938.60

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Solution

The fourth proportional to 8,559.84, 12,840.83 and 2,938.60 is: 4,408.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,559.84 : 12,840.83 = 2,938.60 : x
  2. Step 2: Convert to fraction form
    8,559.84/12,840.83 = 2,938.60/x
  3. Step 3: Cross multiply
    8,559.84x = 12,840.83 × 2,938.60
  4. Step 4: Simplify right side
    8,559.84x = 37,734,063.04
  5. Step 5: Solve for x
    x = 37,734,063.04/8,559.84
  6. Step 6: Final answer
    x = 4,408.27

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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.