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Finding the Fourth Proportional to 3,977.64, 5,968.01 and 1,785.87

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Solution

The fourth proportional to 3,977.64, 5,968.01 and 1,785.87 is: 2,679.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,977.64 : 5,968.01 = 1,785.87 : x
  2. Step 2: Convert to fraction form
    3,977.64/5,968.01 = 1,785.87/x
  3. Step 3: Cross multiply
    3,977.64x = 5,968.01 × 1,785.87
  4. Step 4: Simplify right side
    3,977.64x = 10,658,094.48
  5. Step 5: Solve for x
    x = 10,658,094.48/3,977.64
  6. Step 6: Final answer
    x = 2,679.50

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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.