Home / 2,633.30-3,945.15-2,143.70

Finding the Fourth Proportional to 2,633.30, 3,945.15 and 2,143.70

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Solution

The fourth proportional to 2,633.30, 3,945.15 and 2,143.70 is: 3,211.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,633.30 : 3,945.15 = 2,143.70 : x
  2. Step 2: Convert to fraction form
    2,633.30/3,945.15 = 2,143.70/x
  3. Step 3: Cross multiply
    2,633.30x = 3,945.15 × 2,143.70
  4. Step 4: Simplify right side
    2,633.30x = 8,457,218.06
  5. Step 5: Solve for x
    x = 8,457,218.06/2,633.30
  6. Step 6: Final answer
    x = 3,211.64

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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.