Home / 1,910.76-2,864.04-1,087.28

Finding the Fourth Proportional to 1,910.76, 2,864.04 and 1,087.28

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Solution

The fourth proportional to 1,910.76, 2,864.04 and 1,087.28 is: 1,629.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,910.76 : 2,864.04 = 1,087.28 : x
  2. Step 2: Convert to fraction form
    1,910.76/2,864.04 = 1,087.28/x
  3. Step 3: Cross multiply
    1,910.76x = 2,864.04 × 1,087.28
  4. Step 4: Simplify right side
    1,910.76x = 3,114,013.41
  5. Step 5: Solve for x
    x = 3,114,013.41/1,910.76
  6. Step 6: Final answer
    x = 1,629.73

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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.