Home / 1,718.40-2,578.72-949.44

Finding the Fourth Proportional to 1,718.40, 2,578.72 and 949.44

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Solution

The fourth proportional to 1,718.40, 2,578.72 and 949.44 is: 1,424.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,718.40 : 2,578.72 = 949.44 : x
  2. Step 2: Convert to fraction form
    1,718.40/2,578.72 = 949.44/x
  3. Step 3: Cross multiply
    1,718.40x = 2,578.72 × 949.44
  4. Step 4: Simplify right side
    1,718.40x = 2,448,339.92
  5. Step 5: Solve for x
    x = 2,448,339.92/1,718.40
  6. Step 6: Final answer
    x = 1,424.78

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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.