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Finding the Fourth Proportional to 6,361.53, 8,780.97 and 4,119.45

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Solution

The fourth proportional to 6,361.53, 8,780.97 and 4,119.45 is: 5,686.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,361.53 : 8,780.97 = 4,119.45 : x
  2. Step 2: Convert to fraction form
    6,361.53/8,780.97 = 4,119.45/x
  3. Step 3: Cross multiply
    6,361.53x = 8,780.97 × 4,119.45
  4. Step 4: Simplify right side
    6,361.53x = 36,172,766.87
  5. Step 5: Solve for x
    x = 36,172,766.87/6,361.53
  6. Step 6: Final answer
    x = 5,686.17

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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.