Home / 1,772.16-2,639.10-1,726.80

Finding the Fourth Proportional to 1,772.16, 2,639.10 and 1,726.80

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Solution

The fourth proportional to 1,772.16, 2,639.10 and 1,726.80 is: 2,571.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,772.16 : 2,639.10 = 1,726.80 : x
  2. Step 2: Convert to fraction form
    1,772.16/2,639.10 = 1,726.80/x
  3. Step 3: Cross multiply
    1,772.16x = 2,639.10 × 1,726.80
  4. Step 4: Simplify right side
    1,772.16x = 4,557,197.88
  5. Step 5: Solve for x
    x = 4,557,197.88/1,772.16
  6. Step 6: Final answer
    x = 2,571.55

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.