Home / 3,109.71-4,664.49-1,260.79

Finding the Fourth Proportional to 3,109.71, 4,664.49 and 1,260.79

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Solution

The fourth proportional to 3,109.71, 4,664.49 and 1,260.79 is: 1,891.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,109.71 : 4,664.49 = 1,260.79 : x
  2. Step 2: Convert to fraction form
    3,109.71/4,664.49 = 1,260.79/x
  3. Step 3: Cross multiply
    3,109.71x = 4,664.49 × 1,260.79
  4. Step 4: Simplify right side
    3,109.71x = 5,880,925.96
  5. Step 5: Solve for x
    x = 5,880,925.96/3,109.71
  6. Step 6: Final answer
    x = 1,891.15

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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.