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Finding the Fourth Proportional to 1,809.38, 2,714.80 and 835.94

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Solution

The fourth proportional to 1,809.38, 2,714.80 and 835.94 is: 1,254.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,809.38 : 2,714.80 = 835.94 : x
  2. Step 2: Convert to fraction form
    1,809.38/2,714.80 = 835.94/x
  3. Step 3: Cross multiply
    1,809.38x = 2,714.80 × 835.94
  4. Step 4: Simplify right side
    1,809.38x = 2,269,409.91
  5. Step 5: Solve for x
    x = 2,269,409.91/1,809.38
  6. Step 6: Final answer
    x = 1,254.25

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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.