Home / 2,491.08-3,735.31-1,321.74

Finding the Fourth Proportional to 2,491.08, 3,735.31 and 1,321.74

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Solution

The fourth proportional to 2,491.08, 3,735.31 and 1,321.74 is: 1,981.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,491.08 : 3,735.31 = 1,321.74 : x
  2. Step 2: Convert to fraction form
    2,491.08/3,735.31 = 1,321.74/x
  3. Step 3: Cross multiply
    2,491.08x = 3,735.31 × 1,321.74
  4. Step 4: Simplify right side
    2,491.08x = 4,937,108.64
  5. Step 5: Solve for x
    x = 4,937,108.64/2,491.08
  6. Step 6: Final answer
    x = 1,981.91

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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.