Home / 8,270.45-12,405.15-3,005.65

Finding the Fourth Proportional to 8,270.45, 12,405.15 and 3,005.65

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Solution

The fourth proportional to 8,270.45, 12,405.15 and 3,005.65 is: 4,508.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,270.45 : 12,405.15 = 3,005.65 : x
  2. Step 2: Convert to fraction form
    8,270.45/12,405.15 = 3,005.65/x
  3. Step 3: Cross multiply
    8,270.45x = 12,405.15 × 3,005.65
  4. Step 4: Simplify right side
    8,270.45x = 37,285,539.10
  5. Step 5: Solve for x
    x = 37,285,539.10/8,270.45
  6. Step 6: Final answer
    x = 4,508.28

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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.