Home / 4,758.21-7,134.30-1,986.75

Finding the Fourth Proportional to 4,758.21, 7,134.30 and 1,986.75

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Solution

The fourth proportional to 4,758.21, 7,134.30 and 1,986.75 is: 2,978.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,758.21 : 7,134.30 = 1,986.75 : x
  2. Step 2: Convert to fraction form
    4,758.21/7,134.30 = 1,986.75/x
  3. Step 3: Cross multiply
    4,758.21x = 7,134.30 × 1,986.75
  4. Step 4: Simplify right side
    4,758.21x = 14,174,070.53
  5. Step 5: Solve for x
    x = 14,174,070.53/4,758.21
  6. Step 6: Final answer
    x = 2,978.87

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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.