Home / 1,891.51-2,838.24-1,375.76

Finding the Fourth Proportional to 1,891.51, 2,838.24 and 1,375.76

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Solution

The fourth proportional to 1,891.51, 2,838.24 and 1,375.76 is: 2,064.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,891.51 : 2,838.24 = 1,375.76 : x
  2. Step 2: Convert to fraction form
    1,891.51/2,838.24 = 1,375.76/x
  3. Step 3: Cross multiply
    1,891.51x = 2,838.24 × 1,375.76
  4. Step 4: Simplify right side
    1,891.51x = 3,904,744.16
  5. Step 5: Solve for x
    x = 3,904,744.16/1,891.51
  6. Step 6: Final answer
    x = 2,064.36

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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.