Home / 3,109.61-4,664.43-1,260.76

Finding the Fourth Proportional to 3,109.61, 4,664.43 and 1,260.76

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Solution

The fourth proportional to 3,109.61, 4,664.43 and 1,260.76 is: 1,891.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,109.61 : 4,664.43 = 1,260.76 : x
  2. Step 2: Convert to fraction form
    3,109.61/4,664.43 = 1,260.76/x
  3. Step 3: Cross multiply
    3,109.61x = 4,664.43 × 1,260.76
  4. Step 4: Simplify right side
    3,109.61x = 5,880,726.77
  5. Step 5: Solve for x
    x = 5,880,726.77/3,109.61
  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.