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Finding the Fourth Proportional to 1,674.90, 2,311.44 and 966.48

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Solution

The fourth proportional to 1,674.90, 2,311.44 and 966.48 is: 1,333.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,674.90 : 2,311.44 = 966.48 : x
  2. Step 2: Convert to fraction form
    1,674.90/2,311.44 = 966.48/x
  3. Step 3: Cross multiply
    1,674.90x = 2,311.44 × 966.48
  4. Step 4: Simplify right side
    1,674.90x = 2,233,960.53
  5. Step 5: Solve for x
    x = 2,233,960.53/1,674.90
  6. Step 6: Final answer
    x = 1,333.79

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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.