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Finding the Fourth Proportional to 7,571.88, 11,347.32 and 5,721.48

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Solution

The fourth proportional to 7,571.88, 11,347.32 and 5,721.48 is: 8,574.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,571.88 : 11,347.32 = 5,721.48 : x
  2. Step 2: Convert to fraction form
    7,571.88/11,347.32 = 5,721.48/x
  3. Step 3: Cross multiply
    7,571.88x = 11,347.32 × 5,721.48
  4. Step 4: Simplify right side
    7,571.88x = 64,923,464.43
  5. Step 5: Solve for x
    x = 64,923,464.43/7,571.88
  6. Step 6: Final answer
    x = 8,574.29

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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.