Home / 5,215.86-7,818.30-3,241.47

Finding the Fourth Proportional to 5,215.86, 7,818.30 and 3,241.47

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Solution

The fourth proportional to 5,215.86, 7,818.30 and 3,241.47 is: 4,858.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,215.86 : 7,818.30 = 3,241.47 : x
  2. Step 2: Convert to fraction form
    5,215.86/7,818.30 = 3,241.47/x
  3. Step 3: Cross multiply
    5,215.86x = 7,818.30 × 3,241.47
  4. Step 4: Simplify right side
    5,215.86x = 25,342,784.90
  5. Step 5: Solve for x
    x = 25,342,784.90/5,215.86
  6. Step 6: Final answer
    x = 4,858.79

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1.5x scale

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.