Home / 8,618.12-12,928.52-4,235.92

Finding the Fourth Proportional to 8,618.12, 12,928.52 and 4,235.92

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Solution

The fourth proportional to 8,618.12, 12,928.52 and 4,235.92 is: 6,354.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,618.12 : 12,928.52 = 4,235.92 : x
  2. Step 2: Convert to fraction form
    8,618.12/12,928.52 = 4,235.92/x
  3. Step 3: Cross multiply
    8,618.12x = 12,928.52 × 4,235.92
  4. Step 4: Simplify right side
    8,618.12x = 54,764,176.44
  5. Step 5: Solve for x
    x = 54,764,176.44/8,618.12
  6. Step 6: Final answer
    x = 6,354.54

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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.