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Finding the Fourth Proportional to 2,810.63, 3,879.04 and 1,764.11

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Solution

The fourth proportional to 2,810.63, 3,879.04 and 1,764.11 is: 2,434.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,810.63 : 3,879.04 = 1,764.11 : x
  2. Step 2: Convert to fraction form
    2,810.63/3,879.04 = 1,764.11/x
  3. Step 3: Cross multiply
    2,810.63x = 3,879.04 × 1,764.11
  4. Step 4: Simplify right side
    2,810.63x = 6,843,033.86
  5. Step 5: Solve for x
    x = 6,843,033.86/2,810.63
  6. Step 6: Final answer
    x = 2,434.70

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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.