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Finding the Fourth Proportional to 1,960.68, 2,705.94 and 1,174.80

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Solution

The fourth proportional to 1,960.68, 2,705.94 and 1,174.80 is: 1,621.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,960.68 : 2,705.94 = 1,174.80 : x
  2. Step 2: Convert to fraction form
    1,960.68/2,705.94 = 1,174.80/x
  3. Step 3: Cross multiply
    1,960.68x = 2,705.94 × 1,174.80
  4. Step 4: Simplify right side
    1,960.68x = 3,178,938.31
  5. Step 5: Solve for x
    x = 3,178,938.31/1,960.68
  6. Step 6: Final answer
    x = 1,621.34

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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.