Home / 3,518.12-5,277.66-1,209

Finding the Fourth Proportional to 3,518.12, 5,277.66 and 1,209

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Solution

The fourth proportional to 3,518.12, 5,277.66 and 1,209 is: 1,813.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,518.12 : 5,277.66 = 1,209 : x
  2. Step 2: Convert to fraction form
    3,518.12/5,277.66 = 1,209/x
  3. Step 3: Cross multiply
    3,518.12x = 5,277.66 × 1,209
  4. Step 4: Simplify right side
    3,518.12x = 6,380,690.94
  5. Step 5: Solve for x
    x = 6,380,690.94/3,518.12
  6. Step 6: Final answer
    x = 1,813.66

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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.