Home / 2,858.10-4,286.86-1,939.56

Finding the Fourth Proportional to 2,858.10, 4,286.86 and 1,939.56

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Solution

The fourth proportional to 2,858.10, 4,286.86 and 1,939.56 is: 2,909.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,858.10 : 4,286.86 = 1,939.56 : x
  2. Step 2: Convert to fraction form
    2,858.10/4,286.86 = 1,939.56/x
  3. Step 3: Cross multiply
    2,858.10x = 4,286.86 × 1,939.56
  4. Step 4: Simplify right side
    2,858.10x = 8,314,622.18
  5. Step 5: Solve for x
    x = 8,314,622.18/2,858.10
  6. Step 6: Final answer
    x = 2,909.14

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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.