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Finding the Fourth Proportional to 2,591.46, 3,886.74 and 836.46

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Solution

The fourth proportional to 2,591.46, 3,886.74 and 836.46 is: 1,254.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,591.46 : 3,886.74 = 836.46 : x
  2. Step 2: Convert to fraction form
    2,591.46/3,886.74 = 836.46/x
  3. Step 3: Cross multiply
    2,591.46x = 3,886.74 × 836.46
  4. Step 4: Simplify right side
    2,591.46x = 3,251,102.54
  5. Step 5: Solve for x
    x = 3,251,102.54/2,591.46
  6. Step 6: Final answer
    x = 1,254.54

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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.