Home / 8,371.08-12,558.78-7,211.70

Finding the Fourth Proportional to 8,371.08, 12,558.78 and 7,211.70

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Solution

The fourth proportional to 8,371.08, 12,558.78 and 7,211.70 is: 10,819.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,371.08 : 12,558.78 = 7,211.70 : x
  2. Step 2: Convert to fraction form
    8,371.08/12,558.78 = 7,211.70/x
  3. Step 3: Cross multiply
    8,371.08x = 12,558.78 × 7,211.70
  4. Step 4: Simplify right side
    8,371.08x = 90,570,153.73
  5. Step 5: Solve for x
    x = 90,570,153.73/8,371.08
  6. Step 6: Final answer
    x = 10,819.41

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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.