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Finding the Fourth Proportional to 5,787.86, 7,987.25 and 3,135.27

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Solution

The fourth proportional to 5,787.86, 7,987.25 and 3,135.27 is: 4,326.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,787.86 : 7,987.25 = 3,135.27 : x
  2. Step 2: Convert to fraction form
    5,787.86/7,987.25 = 3,135.27/x
  3. Step 3: Cross multiply
    5,787.86x = 7,987.25 × 3,135.27
  4. Step 4: Simplify right side
    5,787.86x = 25,042,177.28
  5. Step 5: Solve for x
    x = 25,042,177.28/5,787.86
  6. Step 6: Final answer
    x = 4,326.67

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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.