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Finding the Fourth Proportional to 1,385.48, 1,911.82 and 795.90

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Solution

The fourth proportional to 1,385.48, 1,911.82 and 795.90 is: 1,098.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,385.48 : 1,911.82 = 795.90 : x
  2. Step 2: Convert to fraction form
    1,385.48/1,911.82 = 795.90/x
  3. Step 3: Cross multiply
    1,385.48x = 1,911.82 × 795.90
  4. Step 4: Simplify right side
    1,385.48x = 1,521,617.54
  5. Step 5: Solve for x
    x = 1,521,617.54/1,385.48
  6. Step 6: Final answer
    x = 1,098.26

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.