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Finding the Fourth Proportional to 1,674.84, 2,311.40 and 966.81

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Solution

The fourth proportional to 1,674.84, 2,311.40 and 966.81 is: 1,334.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,674.84 : 2,311.40 = 966.81 : x
  2. Step 2: Convert to fraction form
    1,674.84/2,311.40 = 966.81/x
  3. Step 3: Cross multiply
    1,674.84x = 2,311.40 × 966.81
  4. Step 4: Simplify right side
    1,674.84x = 2,234,679.80
  5. Step 5: Solve for x
    x = 2,234,679.80/1,674.84
  6. Step 6: Final answer
    x = 1,334.26

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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.