Home / 7,685.88-11,517.66-4,172.91

Finding the Fourth Proportional to 7,685.88, 11,517.66 and 4,172.91

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Solution

The fourth proportional to 7,685.88, 11,517.66 and 4,172.91 is: 6,253.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,685.88 : 11,517.66 = 4,172.91 : x
  2. Step 2: Convert to fraction form
    7,685.88/11,517.66 = 4,172.91/x
  3. Step 3: Cross multiply
    7,685.88x = 11,517.66 × 4,172.91
  4. Step 4: Simplify right side
    7,685.88x = 48,062,158.59
  5. Step 5: Solve for x
    x = 48,062,158.59/7,685.88
  6. Step 6: Final answer
    x = 6,253.31

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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.