Home / 5,115.03-7,682.27-3,180.75

Finding the Fourth Proportional to 5,115.03, 7,682.27 and 3,180.75

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Solution

The fourth proportional to 5,115.03, 7,682.27 and 3,180.75 is: 4,777.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,115.03 : 7,682.27 = 3,180.75 : x
  2. Step 2: Convert to fraction form
    5,115.03/7,682.27 = 3,180.75/x
  3. Step 3: Cross multiply
    5,115.03x = 7,682.27 × 3,180.75
  4. Step 4: Simplify right side
    5,115.03x = 24,435,364.40
  5. Step 5: Solve for x
    x = 24,435,364.40/5,115.03
  6. Step 6: Final answer
    x = 4,777.17

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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.