Home / 4,276.90-6,405.15-2,078.56

Finding the Fourth Proportional to 4,276.90, 6,405.15 and 2,078.56

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Solution

The fourth proportional to 4,276.90, 6,405.15 and 2,078.56 is: 3,112.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,276.90 : 6,405.15 = 2,078.56 : x
  2. Step 2: Convert to fraction form
    4,276.90/6,405.15 = 2,078.56/x
  3. Step 3: Cross multiply
    4,276.90x = 6,405.15 × 2,078.56
  4. Step 4: Simplify right side
    4,276.90x = 13,313,488.58
  5. Step 5: Solve for x
    x = 13,313,488.58/4,276.90
  6. Step 6: Final answer
    x = 3,112.88

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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.