Home / 5,187.05-7,780.53-3,107.64

Finding the Fourth Proportional to 5,187.05, 7,780.53 and 3,107.64

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Solution

The fourth proportional to 5,187.05, 7,780.53 and 3,107.64 is: 4,661.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,187.05 : 7,780.53 = 3,107.64 : x
  2. Step 2: Convert to fraction form
    5,187.05/7,780.53 = 3,107.64/x
  3. Step 3: Cross multiply
    5,187.05x = 7,780.53 × 3,107.64
  4. Step 4: Simplify right side
    5,187.05x = 24,179,086.25
  5. Step 5: Solve for x
    x = 24,179,086.25/5,187.05
  6. Step 6: Final answer
    x = 4,661.43

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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.