Home / 2,639.12-3,642.33-1,519.88

Finding the Fourth Proportional to 2,639.12, 3,642.33 and 1,519.88

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Solution

The fourth proportional to 2,639.12, 3,642.33 and 1,519.88 is: 2,097.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,639.12 : 3,642.33 = 1,519.88 : x
  2. Step 2: Convert to fraction form
    2,639.12/3,642.33 = 1,519.88/x
  3. Step 3: Cross multiply
    2,639.12x = 3,642.33 × 1,519.88
  4. Step 4: Simplify right side
    2,639.12x = 5,535,878.71
  5. Step 5: Solve for x
    x = 5,535,878.71/2,639.12
  6. Step 6: Final answer
    x = 2,097.63

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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.