Home / 8,370.90-12,556.31-3,176.78

Finding the Fourth Proportional to 8,370.90, 12,556.31 and 3,176.78

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Solution

The fourth proportional to 8,370.90, 12,556.31 and 3,176.78 is: 4,765.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,370.90 : 12,556.31 = 3,176.78 : x
  2. Step 2: Convert to fraction form
    8,370.90/12,556.31 = 3,176.78/x
  3. Step 3: Cross multiply
    8,370.90x = 12,556.31 × 3,176.78
  4. Step 4: Simplify right side
    8,370.90x = 39,888,555.82
  5. Step 5: Solve for x
    x = 39,888,555.82/8,370.90
  6. Step 6: Final answer
    x = 4,765.15

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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.