Home / 2,778.10-4,162.47-1,679.11

Finding the Fourth Proportional to 2,778.10, 4,162.47 and 1,679.11

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Solution

The fourth proportional to 2,778.10, 4,162.47 and 1,679.11 is: 2,515.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,778.10 : 4,162.47 = 1,679.11 : x
  2. Step 2: Convert to fraction form
    2,778.10/4,162.47 = 1,679.11/x
  3. Step 3: Cross multiply
    2,778.10x = 4,162.47 × 1,679.11
  4. Step 4: Simplify right side
    2,778.10x = 6,989,245.00
  5. Step 5: Solve for x
    x = 6,989,245.00/2,778.10
  6. Step 6: Final answer
    x = 2,515.84

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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.