Home / 2,153.11-3,226.60-1,275.79

Finding the Fourth Proportional to 2,153.11, 3,226.60 and 1,275.79

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Solution

The fourth proportional to 2,153.11, 3,226.60 and 1,275.79 is: 1,911.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,153.11 : 3,226.60 = 1,275.79 : x
  2. Step 2: Convert to fraction form
    2,153.11/3,226.60 = 1,275.79/x
  3. Step 3: Cross multiply
    2,153.11x = 3,226.60 × 1,275.79
  4. Step 4: Simplify right side
    2,153.11x = 4,116,464.01
  5. Step 5: Solve for x
    x = 4,116,464.01/2,153.11
  6. Step 6: Final answer
    x = 1,911.87

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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.