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Finding the Fourth Proportional to 7,717.11, 11,578.91 and 4,945.29

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Solution

The fourth proportional to 7,717.11, 11,578.91 and 4,945.29 is: 7,420.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,717.11 : 11,578.91 = 4,945.29 : x
  2. Step 2: Convert to fraction form
    7,717.11/11,578.91 = 4,945.29/x
  3. Step 3: Cross multiply
    7,717.11x = 11,578.91 × 4,945.29
  4. Step 4: Simplify right side
    7,717.11x = 57,261,043.11
  5. Step 5: Solve for x
    x = 57,261,043.11/7,717.11
  6. Step 6: Final answer
    x = 7,420.01

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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.