Home / 5,145.45-7,719.52-2,225.80

Finding the Fourth Proportional to 5,145.45, 7,719.52 and 2,225.80

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Solution

The fourth proportional to 5,145.45, 7,719.52 and 2,225.80 is: 3,339.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,145.45 : 7,719.52 = 2,225.80 : x
  2. Step 2: Convert to fraction form
    5,145.45/7,719.52 = 2,225.80/x
  3. Step 3: Cross multiply
    5,145.45x = 7,719.52 × 2,225.80
  4. Step 4: Simplify right side
    5,145.45x = 17,182,107.62
  5. Step 5: Solve for x
    x = 17,182,107.62/5,145.45
  6. Step 6: Final answer
    x = 3,339.28

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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.