Home / 2,679.40-4,015.99-1,118.53

Finding the Fourth Proportional to 2,679.40, 4,015.99 and 1,118.53

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Solution

The fourth proportional to 2,679.40, 4,015.99 and 1,118.53 is: 1,676.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,679.40 : 4,015.99 = 1,118.53 : x
  2. Step 2: Convert to fraction form
    2,679.40/4,015.99 = 1,118.53/x
  3. Step 3: Cross multiply
    2,679.40x = 4,015.99 × 1,118.53
  4. Step 4: Simplify right side
    2,679.40x = 4,492,005.29
  5. Step 5: Solve for x
    x = 4,492,005.29/2,679.40
  6. Step 6: Final answer
    x = 1,676.50

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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.