Home / 2,118.24-3,179.32-1,079.00

Finding the Fourth Proportional to 2,118.24, 3,179.32 and 1,079.00

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Solution

The fourth proportional to 2,118.24, 3,179.32 and 1,079.00 is: 1,619.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,118.24 : 3,179.32 = 1,079.00 : x
  2. Step 2: Convert to fraction form
    2,118.24/3,179.32 = 1,079.00/x
  3. Step 3: Cross multiply
    2,118.24x = 3,179.32 × 1,079.00
  4. Step 4: Simplify right side
    2,118.24x = 3,430,479.61
  5. Step 5: Solve for x
    x = 3,430,479.61/2,118.24
  6. Step 6: Final answer
    x = 1,619.50

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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.