Home / 2,619.88-3,929.96-1,038.61

Finding the Fourth Proportional to 2,619.88, 3,929.96 and 1,038.61

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Solution

The fourth proportional to 2,619.88, 3,929.96 and 1,038.61 is: 1,557.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,619.88 : 3,929.96 = 1,038.61 : x
  2. Step 2: Convert to fraction form
    2,619.88/3,929.96 = 1,038.61/x
  3. Step 3: Cross multiply
    2,619.88x = 3,929.96 × 1,038.61
  4. Step 4: Simplify right side
    2,619.88x = 4,081,695.76
  5. Step 5: Solve for x
    x = 4,081,695.76/2,619.88
  6. Step 6: Final answer
    x = 1,557.97

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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.