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Finding the Fourth Proportional to 4,745.89, 7,119.20 and 1,824.21

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Solution

The fourth proportional to 4,745.89, 7,119.20 and 1,824.21 is: 2,736.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,745.89 : 7,119.20 = 1,824.21 : x
  2. Step 2: Convert to fraction form
    4,745.89/7,119.20 = 1,824.21/x
  3. Step 3: Cross multiply
    4,745.89x = 7,119.20 × 1,824.21
  4. Step 4: Simplify right side
    4,745.89x = 12,986,915.83
  5. Step 5: Solve for x
    x = 12,986,915.83/4,745.89
  6. Step 6: Final answer
    x = 2,736.46

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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.