Home / 2,639.76-3,642.60-1,520.61

Finding the Fourth Proportional to 2,639.76, 3,642.60 and 1,520.61

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Solution

The fourth proportional to 2,639.76, 3,642.60 and 1,520.61 is: 2,098.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,639.76 : 3,642.60 = 1,520.61 : x
  2. Step 2: Convert to fraction form
    2,639.76/3,642.60 = 1,520.61/x
  3. Step 3: Cross multiply
    2,639.76x = 3,642.60 × 1,520.61
  4. Step 4: Simplify right side
    2,639.76x = 5,538,973.99
  5. Step 5: Solve for x
    x = 5,538,973.99/2,639.76
  6. Step 6: Final answer
    x = 2,098.29

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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.