Home / 1,909.45-2,863.71-1,395.51

Finding the Fourth Proportional to 1,909.45, 2,863.71 and 1,395.51

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Solution

The fourth proportional to 1,909.45, 2,863.71 and 1,395.51 is: 2,092.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,909.45 : 2,863.71 = 1,395.51 : x
  2. Step 2: Convert to fraction form
    1,909.45/2,863.71 = 1,395.51/x
  3. Step 3: Cross multiply
    1,909.45x = 2,863.71 × 1,395.51
  4. Step 4: Simplify right side
    1,909.45x = 3,996,335.94
  5. Step 5: Solve for x
    x = 3,996,335.94/1,909.45
  6. Step 6: Final answer
    x = 2,092.93

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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.