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Finding the Fourth Proportional to 1,385.61, 1,911.94 and 795.93

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Solution

The fourth proportional to 1,385.61, 1,911.94 and 795.93 is: 1,098.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,385.61 : 1,911.94 = 795.93 : x
  2. Step 2: Convert to fraction form
    1,385.61/1,911.94 = 795.93/x
  3. Step 3: Cross multiply
    1,385.61x = 1,911.94 × 795.93
  4. Step 4: Simplify right side
    1,385.61x = 1,521,770.40
  5. Step 5: Solve for x
    x = 1,521,770.40/1,385.61
  6. Step 6: Final answer
    x = 1,098.27

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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.