Home / 3,518.28-5,277.36-1,209.72

Finding the Fourth Proportional to 3,518.28, 5,277.36 and 1,209.72

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Solution

The fourth proportional to 3,518.28, 5,277.36 and 1,209.72 is: 1,814.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,518.28 : 5,277.36 = 1,209.72 : x
  2. Step 2: Convert to fraction form
    3,518.28/5,277.36 = 1,209.72/x
  3. Step 3: Cross multiply
    3,518.28x = 5,277.36 × 1,209.72
  4. Step 4: Simplify right side
    3,518.28x = 6,384,127.94
  5. Step 5: Solve for x
    x = 6,384,127.94/3,518.28
  6. Step 6: Final answer
    x = 1,814.56

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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.