Home / 2,625.65-3,939.41-1,309.28

Finding the Fourth Proportional to 2,625.65, 3,939.41 and 1,309.28

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Solution

The fourth proportional to 2,625.65, 3,939.41 and 1,309.28 is: 1,964.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,625.65 : 3,939.41 = 1,309.28 : x
  2. Step 2: Convert to fraction form
    2,625.65/3,939.41 = 1,309.28/x
  3. Step 3: Cross multiply
    2,625.65x = 3,939.41 × 1,309.28
  4. Step 4: Simplify right side
    2,625.65x = 5,157,790.72
  5. Step 5: Solve for x
    x = 5,157,790.72/2,625.65
  6. Step 6: Final answer
    x = 1,964.39

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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.