Home / 8,512.40-12,768.60-6,158

Finding the Fourth Proportional to 8,512.40, 12,768.60 and 6,158

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Solution

The fourth proportional to 8,512.40, 12,768.60 and 6,158 is: 9,237

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,512.40 : 12,768.60 = 6,158 : x
  2. Step 2: Convert to fraction form
    8,512.40/12,768.60 = 6,158/x
  3. Step 3: Cross multiply
    8,512.40x = 12,768.60 × 6,158
  4. Step 4: Simplify right side
    8,512.40x = 78,629,038.80
  5. Step 5: Solve for x
    x = 78,629,038.80/8,512.40
  6. Step 6: Final answer
    x = 9,237

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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.