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Finding the Fourth Proportional to 2,660.57, 3,674.81 and 1,951.39

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Solution

The fourth proportional to 2,660.57, 3,674.81 and 1,951.39 is: 2,695.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,660.57 : 3,674.81 = 1,951.39 : x
  2. Step 2: Convert to fraction form
    2,660.57/3,674.81 = 1,951.39/x
  3. Step 3: Cross multiply
    2,660.57x = 3,674.81 × 1,951.39
  4. Step 4: Simplify right side
    2,660.57x = 7,170,987.49
  5. Step 5: Solve for x
    x = 7,170,987.49/2,660.57
  6. Step 6: Final answer
    x = 2,695.28

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1.5x scale

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.