Home / 3,179.12-4,769.08-1,331.50

Finding the Fourth Proportional to 3,179.12, 4,769.08 and 1,331.50

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Solution

The fourth proportional to 3,179.12, 4,769.08 and 1,331.50 is: 1,997.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,179.12 : 4,769.08 = 1,331.50 : x
  2. Step 2: Convert to fraction form
    3,179.12/4,769.08 = 1,331.50/x
  3. Step 3: Cross multiply
    3,179.12x = 4,769.08 × 1,331.50
  4. Step 4: Simplify right side
    3,179.12x = 6,350,030.02
  5. Step 5: Solve for x
    x = 6,350,030.02/3,179.12
  6. Step 6: Final answer
    x = 1,997.42

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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.