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Finding the Fourth Proportional to 2,792.45, 4,190.28 and 1,253.45

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Solution

The fourth proportional to 2,792.45, 4,190.28 and 1,253.45 is: 1,880.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,792.45 : 4,190.28 = 1,253.45 : x
  2. Step 2: Convert to fraction form
    2,792.45/4,190.28 = 1,253.45/x
  3. Step 3: Cross multiply
    2,792.45x = 4,190.28 × 1,253.45
  4. Step 4: Simplify right side
    2,792.45x = 5,252,285.51
  5. Step 5: Solve for x
    x = 5,252,285.51/2,792.45
  6. Step 6: Final answer
    x = 1,880.89

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1.5x scale

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.