Home / 10,787.81-16,185.60-3,768.86

Finding the Fourth Proportional to 10,787.81, 16,185.60 and 3,768.86

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Solution

The fourth proportional to 10,787.81, 16,185.60 and 3,768.86 is: 5,654.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,787.81 : 16,185.60 = 3,768.86 : x
  2. Step 2: Convert to fraction form
    10,787.81/16,185.60 = 3,768.86/x
  3. Step 3: Cross multiply
    10,787.81x = 16,185.60 × 3,768.86
  4. Step 4: Simplify right side
    10,787.81x = 61,001,193.62
  5. Step 5: Solve for x
    x = 61,001,193.62/10,787.81
  6. Step 6: Final answer
    x = 5,654.64

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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.