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Finding the Fourth Proportional to 7,171.88, 10,757.81 and 1,977.75

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Solution

The fourth proportional to 7,171.88, 10,757.81 and 1,977.75 is: 2,966.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,171.88 : 10,757.81 = 1,977.75 : x
  2. Step 2: Convert to fraction form
    7,171.88/10,757.81 = 1,977.75/x
  3. Step 3: Cross multiply
    7,171.88x = 10,757.81 × 1,977.75
  4. Step 4: Simplify right side
    7,171.88x = 21,276,263.67
  5. Step 5: Solve for x
    x = 21,276,263.67/7,171.88
  6. Step 6: Final answer
    x = 2,966.63

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Similar ratio
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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.