Home / 5,638.42-7,780.99-3,247.53

Finding the Fourth Proportional to 5,638.42, 7,780.99 and 3,247.53

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Solution

The fourth proportional to 5,638.42, 7,780.99 and 3,247.53 is: 4,481.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,638.42 : 7,780.99 = 3,247.53 : x
  2. Step 2: Convert to fraction form
    5,638.42/7,780.99 = 3,247.53/x
  3. Step 3: Cross multiply
    5,638.42x = 7,780.99 × 3,247.53
  4. Step 4: Simplify right side
    5,638.42x = 25,268,998.45
  5. Step 5: Solve for x
    x = 25,268,998.45/5,638.42
  6. Step 6: Final answer
    x = 4,481.57

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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.