Home / 2,151.18-2,967.68-1,311.75

Finding the Fourth Proportional to 2,151.18, 2,967.68 and 1,311.75

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Solution

The fourth proportional to 2,151.18, 2,967.68 and 1,311.75 is: 1,809.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,151.18 : 2,967.68 = 1,311.75 : x
  2. Step 2: Convert to fraction form
    2,151.18/2,967.68 = 1,311.75/x
  3. Step 3: Cross multiply
    2,151.18x = 2,967.68 × 1,311.75
  4. Step 4: Simplify right side
    2,151.18x = 3,892,847.68
  5. Step 5: Solve for x
    x = 3,892,847.68/2,151.18
  6. Step 6: Final answer
    x = 1,809.63

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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.