Home / 8,142.14-12,215.12-6,482.54

Finding the Fourth Proportional to 8,142.14, 12,215.12 and 6,482.54

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Solution

The fourth proportional to 8,142.14, 12,215.12 and 6,482.54 is: 9,725.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,142.14 : 12,215.12 = 6,482.54 : x
  2. Step 2: Convert to fraction form
    8,142.14/12,215.12 = 6,482.54/x
  3. Step 3: Cross multiply
    8,142.14x = 12,215.12 × 6,482.54
  4. Step 4: Simplify right side
    8,142.14x = 79,184,942.93
  5. Step 5: Solve for x
    x = 79,184,942.93/8,142.14
  6. Step 6: Final answer
    x = 9,725.33

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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.