Home / 4,511.75-6,765.15-1,390.89

Finding the Fourth Proportional to 4,511.75, 6,765.15 and 1,390.89

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Solution

The fourth proportional to 4,511.75, 6,765.15 and 1,390.89 is: 2,085.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,511.75 : 6,765.15 = 1,390.89 : x
  2. Step 2: Convert to fraction form
    4,511.75/6,765.15 = 1,390.89/x
  3. Step 3: Cross multiply
    4,511.75x = 6,765.15 × 1,390.89
  4. Step 4: Simplify right side
    4,511.75x = 9,409,578.95
  5. Step 5: Solve for x
    x = 9,409,578.95/4,511.75
  6. Step 6: Final answer
    x = 2,085.57

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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.