Home / 2,764.90-3,815.49-1,505.98

Finding the Fourth Proportional to 2,764.90, 3,815.49 and 1,505.98

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Solution

The fourth proportional to 2,764.90, 3,815.49 and 1,505.98 is: 2,078.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,764.90 : 3,815.49 = 1,505.98 : x
  2. Step 2: Convert to fraction form
    2,764.90/3,815.49 = 1,505.98/x
  3. Step 3: Cross multiply
    2,764.90x = 3,815.49 × 1,505.98
  4. Step 4: Simplify right side
    2,764.90x = 5,746,051.63
  5. Step 5: Solve for x
    x = 5,746,051.63/2,764.90
  6. Step 6: Final answer
    x = 2,078.21

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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.