Home / 8,427.61-12,638.31-2,879.44

Finding the Fourth Proportional to 8,427.61, 12,638.31 and 2,879.44

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Solution

The fourth proportional to 8,427.61, 12,638.31 and 2,879.44 is: 4,318.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,427.61 : 12,638.31 = 2,879.44 : x
  2. Step 2: Convert to fraction form
    8,427.61/12,638.31 = 2,879.44/x
  3. Step 3: Cross multiply
    8,427.61x = 12,638.31 × 2,879.44
  4. Step 4: Simplify right side
    8,427.61x = 36,391,255.35
  5. Step 5: Solve for x
    x = 36,391,255.35/8,427.61
  6. Step 6: Final answer
    x = 4,318.10

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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.