Home / 8,102.76-12,155.75-2,556.62

Finding the Fourth Proportional to 8,102.76, 12,155.75 and 2,556.62

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Solution

The fourth proportional to 8,102.76, 12,155.75 and 2,556.62 is: 3,835.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,102.76 : 12,155.75 = 2,556.62 : x
  2. Step 2: Convert to fraction form
    8,102.76/12,155.75 = 2,556.62/x
  3. Step 3: Cross multiply
    8,102.76x = 12,155.75 × 2,556.62
  4. Step 4: Simplify right side
    8,102.76x = 31,077,633.57
  5. Step 5: Solve for x
    x = 31,077,633.57/8,102.76
  6. Step 6: Final answer
    x = 3,835.44

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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.