Home / 3,979.50-5,969.68-1,348.90

Finding the Fourth Proportional to 3,979.50, 5,969.68 and 1,348.90

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Solution

The fourth proportional to 3,979.50, 5,969.68 and 1,348.90 is: 2,023.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,979.50 : 5,969.68 = 1,348.90 : x
  2. Step 2: Convert to fraction form
    3,979.50/5,969.68 = 1,348.90/x
  3. Step 3: Cross multiply
    3,979.50x = 5,969.68 × 1,348.90
  4. Step 4: Simplify right side
    3,979.50x = 8,052,501.35
  5. Step 5: Solve for x
    x = 8,052,501.35/3,979.50
  6. Step 6: Final answer
    x = 2,023.50

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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.