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Finding the Fourth Proportional to 7,571.79, 11,356.11 and 3,411.81

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Solution

The fourth proportional to 7,571.79, 11,356.11 and 3,411.81 is: 5,117.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,571.79 : 11,356.11 = 3,411.81 : x
  2. Step 2: Convert to fraction form
    7,571.79/11,356.11 = 3,411.81/x
  3. Step 3: Cross multiply
    7,571.79x = 11,356.11 × 3,411.81
  4. Step 4: Simplify right side
    7,571.79x = 38,744,889.66
  5. Step 5: Solve for x
    x = 38,744,889.66/7,571.79
  6. Step 6: Final answer
    x = 5,117.01

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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.