Home / 2,678.60-4,017.90-1,382.60

Finding the Fourth Proportional to 2,678.60, 4,017.90 and 1,382.60

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Solution

The fourth proportional to 2,678.60, 4,017.90 and 1,382.60 is: 2,073.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,678.60 : 4,017.90 = 1,382.60 : x
  2. Step 2: Convert to fraction form
    2,678.60/4,017.90 = 1,382.60/x
  3. Step 3: Cross multiply
    2,678.60x = 4,017.90 × 1,382.60
  4. Step 4: Simplify right side
    2,678.60x = 5,555,148.54
  5. Step 5: Solve for x
    x = 5,555,148.54/2,678.60
  6. Step 6: Final answer
    x = 2,073.90

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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.