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Finding the Fourth Proportional to 1,293.13, 1,783.78 and 795.43

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Solution

The fourth proportional to 1,293.13, 1,783.78 and 795.43 is: 1,097.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,293.13 : 1,783.78 = 795.43 : x
  2. Step 2: Convert to fraction form
    1,293.13/1,783.78 = 795.43/x
  3. Step 3: Cross multiply
    1,293.13x = 1,783.78 × 795.43
  4. Step 4: Simplify right side
    1,293.13x = 1,418,872.13
  5. Step 5: Solve for x
    x = 1,418,872.13/1,293.13
  6. Step 6: Final answer
    x = 1,097.24

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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.