Home / 2,912.20-4,368.30-2,717.80

Finding the Fourth Proportional to 2,912.20, 4,368.30 and 2,717.80

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Solution

The fourth proportional to 2,912.20, 4,368.30 and 2,717.80 is: 4,076.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,912.20 : 4,368.30 = 2,717.80 : x
  2. Step 2: Convert to fraction form
    2,912.20/4,368.30 = 2,717.80/x
  3. Step 3: Cross multiply
    2,912.20x = 4,368.30 × 2,717.80
  4. Step 4: Simplify right side
    2,912.20x = 11,872,165.74
  5. Step 5: Solve for x
    x = 11,872,165.74/2,912.20
  6. Step 6: Final answer
    x = 4,076.70

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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.