Home / 4,758.80-7,140.23-1,986.09

Finding the Fourth Proportional to 4,758.80, 7,140.23 and 1,986.09

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Solution

The fourth proportional to 4,758.80, 7,140.23 and 1,986.09 is: 2,979.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,758.80 : 7,140.23 = 1,986.09 : x
  2. Step 2: Convert to fraction form
    4,758.80/7,140.23 = 1,986.09/x
  3. Step 3: Cross multiply
    4,758.80x = 7,140.23 × 1,986.09
  4. Step 4: Simplify right side
    4,758.80x = 14,181,121.31
  5. Step 5: Solve for x
    x = 14,181,121.31/4,758.80
  6. Step 6: Final answer
    x = 2,979.98

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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.