Home / 8,157.12-12,219.36-3,768.72

Finding the Fourth Proportional to 8,157.12, 12,219.36 and 3,768.72

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Solution

The fourth proportional to 8,157.12, 12,219.36 and 3,768.72 is: 5,645.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,157.12 : 12,219.36 = 3,768.72 : x
  2. Step 2: Convert to fraction form
    8,157.12/12,219.36 = 3,768.72/x
  3. Step 3: Cross multiply
    8,157.12x = 12,219.36 × 3,768.72
  4. Step 4: Simplify right side
    8,157.12x = 46,051,346.42
  5. Step 5: Solve for x
    x = 46,051,346.42/8,157.12
  6. Step 6: Final answer
    x = 5,645.54

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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.