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Finding the Fourth Proportional to 8,408.42, 12,608.44 and 4,899.65

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Solution

The fourth proportional to 8,408.42, 12,608.44 and 4,899.65 is: 7,347.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,408.42 : 12,608.44 = 4,899.65 : x
  2. Step 2: Convert to fraction form
    8,408.42/12,608.44 = 4,899.65/x
  3. Step 3: Cross multiply
    8,408.42x = 12,608.44 × 4,899.65
  4. Step 4: Simplify right side
    8,408.42x = 61,776,943.05
  5. Step 5: Solve for x
    x = 61,776,943.05/8,408.42
  6. Step 6: Final answer
    x = 7,347.03

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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.