Home / 5,239.12-7,858.58-2,119.09

Finding the Fourth Proportional to 5,239.12, 7,858.58 and 2,119.09

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Solution

The fourth proportional to 5,239.12, 7,858.58 and 2,119.09 is: 3,178.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,239.12 : 7,858.58 = 2,119.09 : x
  2. Step 2: Convert to fraction form
    5,239.12/7,858.58 = 2,119.09/x
  3. Step 3: Cross multiply
    5,239.12x = 7,858.58 × 2,119.09
  4. Step 4: Simplify right side
    5,239.12x = 16,653,043.59
  5. Step 5: Solve for x
    x = 16,653,043.59/5,239.12
  6. Step 6: Final answer
    x = 3,178.60

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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.