Home / 8,370.32-12,556.68-3,986.86

Finding the Fourth Proportional to 8,370.32, 12,556.68 and 3,986.86

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Solution

The fourth proportional to 8,370.32, 12,556.68 and 3,986.86 is: 5,980.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,370.32 : 12,556.68 = 3,986.86 : x
  2. Step 2: Convert to fraction form
    8,370.32/12,556.68 = 3,986.86/x
  3. Step 3: Cross multiply
    8,370.32x = 12,556.68 × 3,986.86
  4. Step 4: Simplify right side
    8,370.32x = 50,061,725.22
  5. Step 5: Solve for x
    x = 50,061,725.22/8,370.32
  6. Step 6: Final answer
    x = 5,980.86

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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.