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Finding the Fourth Proportional to 2,728.89, 4,093.95 and 997.50

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Solution

The fourth proportional to 2,728.89, 4,093.95 and 997.50 is: 1,496.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,728.89 : 4,093.95 = 997.50 : x
  2. Step 2: Convert to fraction form
    2,728.89/4,093.95 = 997.50/x
  3. Step 3: Cross multiply
    2,728.89x = 4,093.95 × 997.50
  4. Step 4: Simplify right side
    2,728.89x = 4,083,715.13
  5. Step 5: Solve for x
    x = 4,083,715.13/2,728.89
  6. Step 6: Final answer
    x = 1,496.47

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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.