Home / 2,621.12-3,929.24-1,161.88

Finding the Fourth Proportional to 2,621.12, 3,929.24 and 1,161.88

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Solution

The fourth proportional to 2,621.12, 3,929.24 and 1,161.88 is: 1,741.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,621.12 : 3,929.24 = 1,161.88 : x
  2. Step 2: Convert to fraction form
    2,621.12/3,929.24 = 1,161.88/x
  3. Step 3: Cross multiply
    2,621.12x = 3,929.24 × 1,161.88
  4. Step 4: Simplify right side
    2,621.12x = 4,565,305.37
  5. Step 5: Solve for x
    x = 4,565,305.37/2,621.12
  6. Step 6: Final answer
    x = 1,741.74

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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.