Home / 4,189.80-6,280.98-2,107.08

Finding the Fourth Proportional to 4,189.80, 6,280.98 and 2,107.08

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Solution

The fourth proportional to 4,189.80, 6,280.98 and 2,107.08 is: 3,158.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,189.80 : 6,280.98 = 2,107.08 : x
  2. Step 2: Convert to fraction form
    4,189.80/6,280.98 = 2,107.08/x
  3. Step 3: Cross multiply
    4,189.80x = 6,280.98 × 2,107.08
  4. Step 4: Simplify right side
    4,189.80x = 13,234,527.34
  5. Step 5: Solve for x
    x = 13,234,527.34/4,189.80
  6. Step 6: Final answer
    x = 3,158.75

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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.