Home / 4,161.90-6,238.76-2,078.78

Finding the Fourth Proportional to 4,161.90, 6,238.76 and 2,078.78

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Solution

The fourth proportional to 4,161.90, 6,238.76 and 2,078.78 is: 3,116.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,161.90 : 6,238.76 = 2,078.78 : x
  2. Step 2: Convert to fraction form
    4,161.90/6,238.76 = 2,078.78/x
  3. Step 3: Cross multiply
    4,161.90x = 6,238.76 × 2,078.78
  4. Step 4: Simplify right side
    4,161.90x = 12,969,030.31
  5. Step 5: Solve for x
    x = 12,969,030.31/4,161.90
  6. Step 6: Final answer
    x = 3,116.13

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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.