Home / 1,815.25-2,505.41-1,029.45

Finding the Fourth Proportional to 1,815.25, 2,505.41 and 1,029.45

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Solution

The fourth proportional to 1,815.25, 2,505.41 and 1,029.45 is: 1,420.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,815.25 : 2,505.41 = 1,029.45 : x
  2. Step 2: Convert to fraction form
    1,815.25/2,505.41 = 1,029.45/x
  3. Step 3: Cross multiply
    1,815.25x = 2,505.41 × 1,029.45
  4. Step 4: Simplify right side
    1,815.25x = 2,579,194.32
  5. Step 5: Solve for x
    x = 2,579,194.32/1,815.25
  6. Step 6: Final answer
    x = 1,420.85

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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.