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Finding the Fourth Proportional to 8,235.68, 12,349.49 and 4,074.34

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Solution

The fourth proportional to 8,235.68, 12,349.49 and 4,074.34 is: 6,109.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,235.68 : 12,349.49 = 4,074.34 : x
  2. Step 2: Convert to fraction form
    8,235.68/12,349.49 = 4,074.34/x
  3. Step 3: Cross multiply
    8,235.68x = 12,349.49 × 4,074.34
  4. Step 4: Simplify right side
    8,235.68x = 50,316,021.09
  5. Step 5: Solve for x
    x = 50,316,021.09/8,235.68
  6. Step 6: Final answer
    x = 6,109.52

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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.