Home / 1,269.20-1,905.62-1,248.54

Finding the Fourth Proportional to 1,269.20, 1,905.62 and 1,248.54

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Solution

The fourth proportional to 1,269.20, 1,905.62 and 1,248.54 is: 1,874.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,269.20 : 1,905.62 = 1,248.54 : x
  2. Step 2: Convert to fraction form
    1,269.20/1,905.62 = 1,248.54/x
  3. Step 3: Cross multiply
    1,269.20x = 1,905.62 × 1,248.54
  4. Step 4: Simplify right side
    1,269.20x = 2,379,242.79
  5. Step 5: Solve for x
    x = 2,379,242.79/1,269.20
  6. Step 6: Final answer
    x = 1,874.60

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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.