Home / 2,772.24-4,158.90-1,311.54

Finding the Fourth Proportional to 2,772.24, 4,158.90 and 1,311.54

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Solution

The fourth proportional to 2,772.24, 4,158.90 and 1,311.54 is: 1,967.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,772.24 : 4,158.90 = 1,311.54 : x
  2. Step 2: Convert to fraction form
    2,772.24/4,158.90 = 1,311.54/x
  3. Step 3: Cross multiply
    2,772.24x = 4,158.90 × 1,311.54
  4. Step 4: Simplify right side
    2,772.24x = 5,454,563.71
  5. Step 5: Solve for x
    x = 5,454,563.71/2,772.24
  6. Step 6: Final answer
    x = 1,967.57

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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.