Home / 2,581.32-3,861-1,538.94

Finding the Fourth Proportional to 2,581.32, 3,861 and 1,538.94

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Solution

The fourth proportional to 2,581.32, 3,861 and 1,538.94 is: 2,301.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,581.32 : 3,861 = 1,538.94 : x
  2. Step 2: Convert to fraction form
    2,581.32/3,861 = 1,538.94/x
  3. Step 3: Cross multiply
    2,581.32x = 3,861 × 1,538.94
  4. Step 4: Simplify right side
    2,581.32x = 5,941,847.34
  5. Step 5: Solve for x
    x = 5,941,847.34/2,581.32
  6. Step 6: Final answer
    x = 2,301.86

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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.