Home / 1,815.41-2,505.57-1,372.54

Finding the Fourth Proportional to 1,815.41, 2,505.57 and 1,372.54

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Solution

The fourth proportional to 1,815.41, 2,505.57 and 1,372.54 is: 1,894.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,815.41 : 2,505.57 = 1,372.54 : x
  2. Step 2: Convert to fraction form
    1,815.41/2,505.57 = 1,372.54/x
  3. Step 3: Cross multiply
    1,815.41x = 2,505.57 × 1,372.54
  4. Step 4: Simplify right side
    1,815.41x = 3,438,988.19
  5. Step 5: Solve for x
    x = 3,438,988.19/1,815.41
  6. Step 6: Final answer
    x = 1,894.34

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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.