Home / 2,972.28-4,099.80-1,792.56

Finding the Fourth Proportional to 2,972.28, 4,099.80 and 1,792.56

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Solution

The fourth proportional to 2,972.28, 4,099.80 and 1,792.56 is: 2,472.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,972.28 : 4,099.80 = 1,792.56 : x
  2. Step 2: Convert to fraction form
    2,972.28/4,099.80 = 1,792.56/x
  3. Step 3: Cross multiply
    2,972.28x = 4,099.80 × 1,792.56
  4. Step 4: Simplify right side
    2,972.28x = 7,349,137.49
  5. Step 5: Solve for x
    x = 7,349,137.49/2,972.28
  6. Step 6: Final answer
    x = 2,472.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.