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Finding the Fourth Proportional to 5,787.86, 7,987.37 and 3,269.79

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Solution

The fourth proportional to 5,787.86, 7,987.37 and 3,269.79 is: 4,512.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,787.86 : 7,987.37 = 3,269.79 : x
  2. Step 2: Convert to fraction form
    5,787.86/7,987.37 = 3,269.79/x
  3. Step 3: Cross multiply
    5,787.86x = 7,987.37 × 3,269.79
  4. Step 4: Simplify right side
    5,787.86x = 26,117,006.20
  5. Step 5: Solve for x
    x = 26,117,006.20/5,787.86
  6. Step 6: Final answer
    x = 4,512.38

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1.5x scale

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.