Home / 2,878.45-4,318.24-1,123.39

Finding the Fourth Proportional to 2,878.45, 4,318.24 and 1,123.39

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Solution

The fourth proportional to 2,878.45, 4,318.24 and 1,123.39 is: 1,685.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,878.45 : 4,318.24 = 1,123.39 : x
  2. Step 2: Convert to fraction form
    2,878.45/4,318.24 = 1,123.39/x
  3. Step 3: Cross multiply
    2,878.45x = 4,318.24 × 1,123.39
  4. Step 4: Simplify right side
    2,878.45x = 4,851,067.63
  5. Step 5: Solve for x
    x = 4,851,067.63/2,878.45
  6. Step 6: Final answer
    x = 1,685.31

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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.