Home / 1,780.50-2,451.66-1,578.44

Finding the Fourth Proportional to 1,780.50, 2,451.66 and 1,578.44

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Solution

The fourth proportional to 1,780.50, 2,451.66 and 1,578.44 is: 2,173.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,780.50 : 2,451.66 = 1,578.44 : x
  2. Step 2: Convert to fraction form
    1,780.50/2,451.66 = 1,578.44/x
  3. Step 3: Cross multiply
    1,780.50x = 2,451.66 × 1,578.44
  4. Step 4: Simplify right side
    1,780.50x = 3,869,798.21
  5. Step 5: Solve for x
    x = 3,869,798.21/1,780.50
  6. Step 6: Final answer
    x = 2,173.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.