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Finding the Fourth Proportional to 6,361.88, 9,541.20 and 4,280.72

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Solution

The fourth proportional to 6,361.88, 9,541.20 and 4,280.72 is: 6,419.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,361.88 : 9,541.20 = 4,280.72 : x
  2. Step 2: Convert to fraction form
    6,361.88/9,541.20 = 4,280.72/x
  3. Step 3: Cross multiply
    6,361.88x = 9,541.20 × 4,280.72
  4. Step 4: Simplify right side
    6,361.88x = 40,843,205.66
  5. Step 5: Solve for x
    x = 40,843,205.66/6,361.88
  6. Step 6: Final answer
    x = 6,419.99

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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.