Home / 2,632.80-3,944.40-2,143.20

Finding the Fourth Proportional to 2,632.80, 3,944.40 and 2,143.20

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Solution

The fourth proportional to 2,632.80, 3,944.40 and 2,143.20 is: 3,210.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,632.80 : 3,944.40 = 2,143.20 : x
  2. Step 2: Convert to fraction form
    2,632.80/3,944.40 = 2,143.20/x
  3. Step 3: Cross multiply
    2,632.80x = 3,944.40 × 2,143.20
  4. Step 4: Simplify right side
    2,632.80x = 8,453,638.08
  5. Step 5: Solve for x
    x = 8,453,638.08/2,632.80
  6. Step 6: Final answer
    x = 3,210.89

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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.