Home / 8,318.90-12,474.91-3,385.19

Finding the Fourth Proportional to 8,318.90, 12,474.91 and 3,385.19

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Solution

The fourth proportional to 8,318.90, 12,474.91 and 3,385.19 is: 5,076.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,318.90 : 12,474.91 = 3,385.19 : x
  2. Step 2: Convert to fraction form
    8,318.90/12,474.91 = 3,385.19/x
  3. Step 3: Cross multiply
    8,318.90x = 12,474.91 × 3,385.19
  4. Step 4: Simplify right side
    8,318.90x = 42,229,976.00
  5. Step 5: Solve for x
    x = 42,229,976.00/8,318.90
  6. Step 6: Final answer
    x = 5,076.39

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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.