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Finding the Fourth Proportional to 1,956.87, 2,700.46 and 1,072.68

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Solution

The fourth proportional to 1,956.87, 2,700.46 and 1,072.68 is: 1,480.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,956.87 : 2,700.46 = 1,072.68 : x
  2. Step 2: Convert to fraction form
    1,956.87/2,700.46 = 1,072.68/x
  3. Step 3: Cross multiply
    1,956.87x = 2,700.46 × 1,072.68
  4. Step 4: Simplify right side
    1,956.87x = 2,896,710.57
  5. Step 5: Solve for x
    x = 2,896,710.57/1,956.87
  6. Step 6: Final answer
    x = 1,480.28

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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.