Home / 2,679.60-4,018.32-1,118.58

Finding the Fourth Proportional to 2,679.60, 4,018.32 and 1,118.58

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Solution

The fourth proportional to 2,679.60, 4,018.32 and 1,118.58 is: 1,677.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,679.60 : 4,018.32 = 1,118.58 : x
  2. Step 2: Convert to fraction form
    2,679.60/4,018.32 = 1,118.58/x
  3. Step 3: Cross multiply
    2,679.60x = 4,018.32 × 1,118.58
  4. Step 4: Simplify right side
    2,679.60x = 4,494,812.39
  5. Step 5: Solve for x
    x = 4,494,812.39/2,679.60
  6. Step 6: Final answer
    x = 1,677.42

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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.