Home / 5,115.44-7,028.72-4,065.68

Finding the Fourth Proportional to 5,115.44, 7,028.72 and 4,065.68

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Solution

The fourth proportional to 5,115.44, 7,028.72 and 4,065.68 is: 5,586.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,115.44 : 7,028.72 = 4,065.68 : x
  2. Step 2: Convert to fraction form
    5,115.44/7,028.72 = 4,065.68/x
  3. Step 3: Cross multiply
    5,115.44x = 7,028.72 × 4,065.68
  4. Step 4: Simplify right side
    5,115.44x = 28,576,470.86
  5. Step 5: Solve for x
    x = 28,576,470.86/5,115.44
  6. Step 6: Final answer
    x = 5,586.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.