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Finding the Fourth Proportional to 2,285.42, 3,428.12 and 641.82

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Solution

The fourth proportional to 2,285.42, 3,428.12 and 641.82 is: 962.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,285.42 : 3,428.12 = 641.82 : x
  2. Step 2: Convert to fraction form
    2,285.42/3,428.12 = 641.82/x
  3. Step 3: Cross multiply
    2,285.42x = 3,428.12 × 641.82
  4. Step 4: Simplify right side
    2,285.42x = 2,200,250.44
  5. Step 5: Solve for x
    x = 2,200,250.44/2,285.42
  6. Step 6: Final answer
    x = 962.74

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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.