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Finding the Fourth Proportional to 5,600.90, 7,728.74 and 3,243.20

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Solution

The fourth proportional to 5,600.90, 7,728.74 and 3,243.20 is: 4,475.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,600.90 : 7,728.74 = 3,243.20 : x
  2. Step 2: Convert to fraction form
    5,600.90/7,728.74 = 3,243.20/x
  3. Step 3: Cross multiply
    5,600.90x = 7,728.74 × 3,243.20
  4. Step 4: Simplify right side
    5,600.90x = 25,065,849.57
  5. Step 5: Solve for x
    x = 25,065,849.57/5,600.90
  6. Step 6: Final answer
    x = 4,475.33

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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.