Home / 3,007.21-4,149.68-1,680.73

Finding the Fourth Proportional to 3,007.21, 4,149.68 and 1,680.73

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Solution

The fourth proportional to 3,007.21, 4,149.68 and 1,680.73 is: 2,319.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,007.21 : 4,149.68 = 1,680.73 : x
  2. Step 2: Convert to fraction form
    3,007.21/4,149.68 = 1,680.73/x
  3. Step 3: Cross multiply
    3,007.21x = 4,149.68 × 1,680.73
  4. Step 4: Simplify right side
    3,007.21x = 6,974,491.67
  5. Step 5: Solve for x
    x = 6,974,491.67/3,007.21
  6. Step 6: Final answer
    x = 2,319.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.