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Finding the Fourth Proportional to 1,546.39, 2,134.02 and 847.75

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Solution

The fourth proportional to 1,546.39, 2,134.02 and 847.75 is: 1,169.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,546.39 : 2,134.02 = 847.75 : x
  2. Step 2: Convert to fraction form
    1,546.39/2,134.02 = 847.75/x
  3. Step 3: Cross multiply
    1,546.39x = 2,134.02 × 847.75
  4. Step 4: Simplify right side
    1,546.39x = 1,809,115.46
  5. Step 5: Solve for x
    x = 1,809,115.46/1,546.39
  6. Step 6: Final answer
    x = 1,169.90

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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.