Home / 1,910.78-2,636.98-1,071.44

Finding the Fourth Proportional to 1,910.78, 2,636.98 and 1,071.44

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Solution

The fourth proportional to 1,910.78, 2,636.98 and 1,071.44 is: 1,478.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,910.78 : 2,636.98 = 1,071.44 : x
  2. Step 2: Convert to fraction form
    1,910.78/2,636.98 = 1,071.44/x
  3. Step 3: Cross multiply
    1,910.78x = 2,636.98 × 1,071.44
  4. Step 4: Simplify right side
    1,910.78x = 2,825,349.99
  5. Step 5: Solve for x
    x = 2,825,349.99/1,910.78
  6. Step 6: Final answer
    x = 1,478.64

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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.