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Finding the Fourth Proportional to 1,674.71, 2,311.19 and 966.55

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Solution

The fourth proportional to 1,674.71, 2,311.19 and 966.55 is: 1,333.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,674.71 : 2,311.19 = 966.55 : x
  2. Step 2: Convert to fraction form
    1,674.71/2,311.19 = 966.55/x
  3. Step 3: Cross multiply
    1,674.71x = 2,311.19 × 966.55
  4. Step 4: Simplify right side
    1,674.71x = 2,233,875.86
  5. Step 5: Solve for x
    x = 2,233,875.86/1,674.71
  6. Step 6: Final answer
    x = 1,333.89

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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.