Home / 8,285.12-12,398.52-6,321.68

Finding the Fourth Proportional to 8,285.12, 12,398.52 and 6,321.68

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Solution

The fourth proportional to 8,285.12, 12,398.52 and 6,321.68 is: 9,460.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,285.12 : 12,398.52 = 6,321.68 : x
  2. Step 2: Convert to fraction form
    8,285.12/12,398.52 = 6,321.68/x
  3. Step 3: Cross multiply
    8,285.12x = 12,398.52 × 6,321.68
  4. Step 4: Simplify right side
    8,285.12x = 78,379,475.91
  5. Step 5: Solve for x
    x = 78,379,475.91/8,285.12
  6. Step 6: Final answer
    x = 9,460.27

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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.