Home / 6,147.80-9,219.72-1,986.92

Finding the Fourth Proportional to 6,147.80, 9,219.72 and 1,986.92

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Solution

The fourth proportional to 6,147.80, 9,219.72 and 1,986.92 is: 2,979.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,147.80 : 9,219.72 = 1,986.92 : x
  2. Step 2: Convert to fraction form
    6,147.80/9,219.72 = 1,986.92/x
  3. Step 3: Cross multiply
    6,147.80x = 9,219.72 × 1,986.92
  4. Step 4: Simplify right side
    6,147.80x = 18,318,799.96
  5. Step 5: Solve for x
    x = 18,318,799.96/6,147.80
  6. Step 6: Final answer
    x = 2,979.74

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1.5x scale

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.