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Finding the Fourth Proportional to 7,757.19, 11,579.54 and 7,179.01

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Solution

The fourth proportional to 7,757.19, 11,579.54 and 7,179.01 is: 10,716.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,757.19 : 11,579.54 = 7,179.01 : x
  2. Step 2: Convert to fraction form
    7,757.19/11,579.54 = 7,179.01/x
  3. Step 3: Cross multiply
    7,757.19x = 11,579.54 × 7,179.01
  4. Step 4: Simplify right side
    7,757.19x = 83,129,568.61
  5. Step 5: Solve for x
    x = 83,129,568.61/7,757.19
  6. Step 6: Final answer
    x = 10,716.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.