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Finding the Fourth Proportional to 5,600.88, 7,728.72 and 3,243.12

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Solution

The fourth proportional to 5,600.88, 7,728.72 and 3,243.12 is: 4,475.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,600.88 : 7,728.72 = 3,243.12 : x
  2. Step 2: Convert to fraction form
    5,600.88/7,728.72 = 3,243.12/x
  3. Step 3: Cross multiply
    5,600.88x = 7,728.72 × 3,243.12
  4. Step 4: Simplify right side
    5,600.88x = 25,065,166.41
  5. Step 5: Solve for x
    x = 25,065,166.41/5,600.88
  6. Step 6: Final answer
    x = 4,475.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.