Home / 3,078.90-4,606.20-2,672.55

Finding the Fourth Proportional to 3,078.90, 4,606.20 and 2,672.55

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Solution

The fourth proportional to 3,078.90, 4,606.20 and 2,672.55 is: 3,998.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,078.90 : 4,606.20 = 2,672.55 : x
  2. Step 2: Convert to fraction form
    3,078.90/4,606.20 = 2,672.55/x
  3. Step 3: Cross multiply
    3,078.90x = 4,606.20 × 2,672.55
  4. Step 4: Simplify right side
    3,078.90x = 12,310,299.81
  5. Step 5: Solve for x
    x = 12,310,299.81/3,078.90
  6. Step 6: Final answer
    x = 3,998.28

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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.