Home / 3,281.54-4,920.68-1,431.85

Finding the Fourth Proportional to 3,281.54, 4,920.68 and 1,431.85

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Solution

The fourth proportional to 3,281.54, 4,920.68 and 1,431.85 is: 2,147.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,281.54 : 4,920.68 = 1,431.85 : x
  2. Step 2: Convert to fraction form
    3,281.54/4,920.68 = 1,431.85/x
  3. Step 3: Cross multiply
    3,281.54x = 4,920.68 × 1,431.85
  4. Step 4: Simplify right side
    3,281.54x = 7,045,666.94
  5. Step 5: Solve for x
    x = 7,045,666.94/3,281.54
  6. Step 6: Final answer
    x = 2,147.06

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1.5x scale

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.