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Finding the Fourth Proportional to 2,481.66, 3,715.20 and 1,958.00

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Solution

The fourth proportional to 2,481.66, 3,715.20 and 1,958.00 is: 2,931.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,481.66 : 3,715.20 = 1,958.00 : x
  2. Step 2: Convert to fraction form
    2,481.66/3,715.20 = 1,958.00/x
  3. Step 3: Cross multiply
    2,481.66x = 3,715.20 × 1,958.00
  4. Step 4: Simplify right side
    2,481.66x = 7,274,343.02
  5. Step 5: Solve for x
    x = 7,274,343.02/2,481.66
  6. Step 6: Final answer
    x = 2,931.24

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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.