Home / 5,187.89-7,782.26-1,900.19

Finding the Fourth Proportional to 5,187.89, 7,782.26 and 1,900.19

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Solution

The fourth proportional to 5,187.89, 7,782.26 and 1,900.19 is: 2,850.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,187.89 : 7,782.26 = 1,900.19 : x
  2. Step 2: Convert to fraction form
    5,187.89/7,782.26 = 1,900.19/x
  3. Step 3: Cross multiply
    5,187.89x = 7,782.26 × 1,900.19
  4. Step 4: Simplify right side
    5,187.89x = 14,787,724.22
  5. Step 5: Solve for x
    x = 14,787,724.22/5,187.89
  6. Step 6: Final answer
    x = 2,850.43

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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.