Home / 5,415.86-8,124.00-2,644.85

Finding the Fourth Proportional to 5,415.86, 8,124.00 and 2,644.85

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Solution

The fourth proportional to 5,415.86, 8,124.00 and 2,644.85 is: 3,967.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,415.86 : 8,124.00 = 2,644.85 : x
  2. Step 2: Convert to fraction form
    5,415.86/8,124.00 = 2,644.85/x
  3. Step 3: Cross multiply
    5,415.86x = 8,124.00 × 2,644.85
  4. Step 4: Simplify right side
    5,415.86x = 21,486,771.79
  5. Step 5: Solve for x
    x = 21,486,771.79/5,415.86
  6. Step 6: Final answer
    x = 3,967.38

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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.