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Finding the Fourth Proportional to 1,783.24, 2,676.02 and 809.35

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Solution

The fourth proportional to 1,783.24, 2,676.02 and 809.35 is: 1,214.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,783.24 : 2,676.02 = 809.35 : x
  2. Step 2: Convert to fraction form
    1,783.24/2,676.02 = 809.35/x
  3. Step 3: Cross multiply
    1,783.24x = 2,676.02 × 809.35
  4. Step 4: Simplify right side
    1,783.24x = 2,165,826.05
  5. Step 5: Solve for x
    x = 2,165,826.05/1,783.24
  6. Step 6: Final answer
    x = 1,214.55

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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.