Home / 5,186.96-7,780.44-1,900.31

Finding the Fourth Proportional to 5,186.96, 7,780.44 and 1,900.31

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Solution

The fourth proportional to 5,186.96, 7,780.44 and 1,900.31 is: 2,850.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,186.96 : 7,780.44 = 1,900.31 : x
  2. Step 2: Convert to fraction form
    5,186.96/7,780.44 = 1,900.31/x
  3. Step 3: Cross multiply
    5,186.96x = 7,780.44 × 1,900.31
  4. Step 4: Simplify right side
    5,186.96x = 14,785,249.24
  5. Step 5: Solve for x
    x = 14,785,249.24/5,186.96
  6. Step 6: Final answer
    x = 2,850.46

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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.