Home / 3,081.84-4,251.06-2,689.80

Finding the Fourth Proportional to 3,081.84, 4,251.06 and 2,689.80

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Solution

The fourth proportional to 3,081.84, 4,251.06 and 2,689.80 is: 3,710.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,081.84 : 4,251.06 = 2,689.80 : x
  2. Step 2: Convert to fraction form
    3,081.84/4,251.06 = 2,689.80/x
  3. Step 3: Cross multiply
    3,081.84x = 4,251.06 × 2,689.80
  4. Step 4: Simplify right side
    3,081.84x = 11,434,501.19
  5. Step 5: Solve for x
    x = 11,434,501.19/3,081.84
  6. Step 6: Final answer
    x = 3,710.28

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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.