Home / 5,421.50-8,133.56-2,787.96

Finding the Fourth Proportional to 5,421.50, 8,133.56 and 2,787.96

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Solution

The fourth proportional to 5,421.50, 8,133.56 and 2,787.96 is: 4,182.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,421.50 : 8,133.56 = 2,787.96 : x
  2. Step 2: Convert to fraction form
    5,421.50/8,133.56 = 2,787.96/x
  3. Step 3: Cross multiply
    5,421.50x = 8,133.56 × 2,787.96
  4. Step 4: Simplify right side
    5,421.50x = 22,676,039.94
  5. Step 5: Solve for x
    x = 22,676,039.94/5,421.50
  6. Step 6: Final answer
    x = 4,182.61

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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.