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Finding the Fourth Proportional to 7,943.50, 11,915.25 and 2,471.50

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Solution

The fourth proportional to 7,943.50, 11,915.25 and 2,471.50 is: 3,707.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,943.50 : 11,915.25 = 2,471.50 : x
  2. Step 2: Convert to fraction form
    7,943.50/11,915.25 = 2,471.50/x
  3. Step 3: Cross multiply
    7,943.50x = 11,915.25 × 2,471.50
  4. Step 4: Simplify right side
    7,943.50x = 29,448,540.38
  5. Step 5: Solve for x
    x = 29,448,540.38/7,943.50
  6. Step 6: Final answer
    x = 3,707.25

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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.