Home / 2,912.05-4,363.28-1,680.49

Finding the Fourth Proportional to 2,912.05, 4,363.28 and 1,680.49

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Solution

The fourth proportional to 2,912.05, 4,363.28 and 1,680.49 is: 2,517.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,912.05 : 4,363.28 = 1,680.49 : x
  2. Step 2: Convert to fraction form
    2,912.05/4,363.28 = 1,680.49/x
  3. Step 3: Cross multiply
    2,912.05x = 4,363.28 × 1,680.49
  4. Step 4: Simplify right side
    2,912.05x = 7,332,461.21
  5. Step 5: Solve for x
    x = 7,332,461.21/2,912.05
  6. Step 6: Final answer
    x = 2,517.98

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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.