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Finding the Fourth Proportional to 1,783.29, 2,673.84 and 858.06

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Solution

The fourth proportional to 1,783.29, 2,673.84 and 858.06 is: 1,286.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,783.29 : 2,673.84 = 858.06 : x
  2. Step 2: Convert to fraction form
    1,783.29/2,673.84 = 858.06/x
  3. Step 3: Cross multiply
    1,783.29x = 2,673.84 × 858.06
  4. Step 4: Simplify right side
    1,783.29x = 2,294,315.15
  5. Step 5: Solve for x
    x = 2,294,315.15/1,783.29
  6. Step 6: Final answer
    x = 1,286.56

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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.