Home / 2,858.55-4,285.80-1,299.30

Finding the Fourth Proportional to 2,858.55, 4,285.80 and 1,299.30

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Solution

The fourth proportional to 2,858.55, 4,285.80 and 1,299.30 is: 1,948.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,858.55 : 4,285.80 = 1,299.30 : x
  2. Step 2: Convert to fraction form
    2,858.55/4,285.80 = 1,299.30/x
  3. Step 3: Cross multiply
    2,858.55x = 4,285.80 × 1,299.30
  4. Step 4: Simplify right side
    2,858.55x = 5,568,539.94
  5. Step 5: Solve for x
    x = 5,568,539.94/2,858.55
  6. Step 6: Final answer
    x = 1,948.03

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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.