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Finding the Fourth Proportional to 5,361.80, 8,049.90 and 3,417.80

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Solution

The fourth proportional to 5,361.80, 8,049.90 and 3,417.80 is: 5,131.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,361.80 : 8,049.90 = 3,417.80 : x
  2. Step 2: Convert to fraction form
    5,361.80/8,049.90 = 3,417.80/x
  3. Step 3: Cross multiply
    5,361.80x = 8,049.90 × 3,417.80
  4. Step 4: Simplify right side
    5,361.80x = 27,512,948.22
  5. Step 5: Solve for x
    x = 27,512,948.22/5,361.80
  6. Step 6: Final answer
    x = 5,131.29

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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.