Home / 1,276.16-1,912.68-581.85

Finding the Fourth Proportional to 1,276.16, 1,912.68 and 581.85

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Solution

The fourth proportional to 1,276.16, 1,912.68 and 581.85 is: 872.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,276.16 : 1,912.68 = 581.85 : x
  2. Step 2: Convert to fraction form
    1,276.16/1,912.68 = 581.85/x
  3. Step 3: Cross multiply
    1,276.16x = 1,912.68 × 581.85
  4. Step 4: Simplify right side
    1,276.16x = 1,112,892.86
  5. Step 5: Solve for x
    x = 1,112,892.86/1,276.16
  6. Step 6: Final answer
    x = 872.07

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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.