Home / 3,134.40-4,321.08-1,954.68

Finding the Fourth Proportional to 3,134.40, 4,321.08 and 1,954.68

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Solution

The fourth proportional to 3,134.40, 4,321.08 and 1,954.68 is: 2,694.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,134.40 : 4,321.08 = 1,954.68 : x
  2. Step 2: Convert to fraction form
    3,134.40/4,321.08 = 1,954.68/x
  3. Step 3: Cross multiply
    3,134.40x = 4,321.08 × 1,954.68
  4. Step 4: Simplify right side
    3,134.40x = 8,446,328.65
  5. Step 5: Solve for x
    x = 8,446,328.65/3,134.40
  6. Step 6: Final answer
    x = 2,694.72

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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.