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Finding the Fourth Proportional to 3,173.58, 4,760.90 and 981.87

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Solution

The fourth proportional to 3,173.58, 4,760.90 and 981.87 is: 1,472.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,173.58 : 4,760.90 = 981.87 : x
  2. Step 2: Convert to fraction form
    3,173.58/4,760.90 = 981.87/x
  3. Step 3: Cross multiply
    3,173.58x = 4,760.90 × 981.87
  4. Step 4: Simplify right side
    3,173.58x = 4,674,579.97
  5. Step 5: Solve for x
    x = 4,674,579.97/3,173.58
  6. Step 6: Final answer
    x = 1,472.97

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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.