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Finding the Fourth Proportional to 1,966.96, 2,951.46 and 872.08

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Solution

The fourth proportional to 1,966.96, 2,951.46 and 872.08 is: 1,308.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,966.96 : 2,951.46 = 872.08 : x
  2. Step 2: Convert to fraction form
    1,966.96/2,951.46 = 872.08/x
  3. Step 3: Cross multiply
    1,966.96x = 2,951.46 × 872.08
  4. Step 4: Simplify right side
    1,966.96x = 2,573,909.24
  5. Step 5: Solve for x
    x = 2,573,909.24/1,966.96
  6. Step 6: Final answer
    x = 1,308.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.