Home / 8,426.70-12,636.36-2,878.56

Finding the Fourth Proportional to 8,426.70, 12,636.36 and 2,878.56

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Solution

The fourth proportional to 8,426.70, 12,636.36 and 2,878.56 is: 4,316.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,426.70 : 12,636.36 = 2,878.56 : x
  2. Step 2: Convert to fraction form
    8,426.70/12,636.36 = 2,878.56/x
  3. Step 3: Cross multiply
    8,426.70x = 12,636.36 × 2,878.56
  4. Step 4: Simplify right side
    8,426.70x = 36,374,520.44
  5. Step 5: Solve for x
    x = 36,374,520.44/8,426.70
  6. Step 6: Final answer
    x = 4,316.58

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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.