Home / 3,253.40-4,879.20-1,305.80

Finding the Fourth Proportional to 3,253.40, 4,879.20 and 1,305.80

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Solution

The fourth proportional to 3,253.40, 4,879.20 and 1,305.80 is: 1,958.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,253.40 : 4,879.20 = 1,305.80 : x
  2. Step 2: Convert to fraction form
    3,253.40/4,879.20 = 1,305.80/x
  3. Step 3: Cross multiply
    3,253.40x = 4,879.20 × 1,305.80
  4. Step 4: Simplify right side
    3,253.40x = 6,371,259.36
  5. Step 5: Solve for x
    x = 6,371,259.36/3,253.40
  6. Step 6: Final answer
    x = 1,958.34

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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.