Home / 3,081.26-4,251.76-1,754.80

Finding the Fourth Proportional to 3,081.26, 4,251.76 and 1,754.80

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Solution

The fourth proportional to 3,081.26, 4,251.76 and 1,754.80 is: 2,421.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,081.26 : 4,251.76 = 1,754.80 : x
  2. Step 2: Convert to fraction form
    3,081.26/4,251.76 = 1,754.80/x
  3. Step 3: Cross multiply
    3,081.26x = 4,251.76 × 1,754.80
  4. Step 4: Simplify right side
    3,081.26x = 7,460,973.43
  5. Step 5: Solve for x
    x = 7,460,973.43/3,081.26
  6. Step 6: Final answer
    x = 2,421.40

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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.