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Finding the Fourth Proportional to 7,131.15, 9,894.74 and 6,927.03

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Solution

The fourth proportional to 7,131.15, 9,894.74 and 6,927.03 is: 9,611.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,131.15 : 9,894.74 = 6,927.03 : x
  2. Step 2: Convert to fraction form
    7,131.15/9,894.74 = 6,927.03/x
  3. Step 3: Cross multiply
    7,131.15x = 9,894.74 × 6,927.03
  4. Step 4: Simplify right side
    7,131.15x = 68,541,126.19
  5. Step 5: Solve for x
    x = 68,541,126.19/7,131.15
  6. Step 6: Final answer
    x = 9,611.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.