Home / 2,620.32-3,615.90-1,441.20

Finding the Fourth Proportional to 2,620.32, 3,615.90 and 1,441.20

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Solution

The fourth proportional to 2,620.32, 3,615.90 and 1,441.20 is: 1,988.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,620.32 : 3,615.90 = 1,441.20 : x
  2. Step 2: Convert to fraction form
    2,620.32/3,615.90 = 1,441.20/x
  3. Step 3: Cross multiply
    2,620.32x = 3,615.90 × 1,441.20
  4. Step 4: Simplify right side
    2,620.32x = 5,211,235.08
  5. Step 5: Solve for x
    x = 5,211,235.08/2,620.32
  6. Step 6: Final answer
    x = 1,988.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.