Home / 1,269.86-1,905.39-577.04

Finding the Fourth Proportional to 1,269.86, 1,905.39 and 577.04

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Solution

The fourth proportional to 1,269.86, 1,905.39 and 577.04 is: 865.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,269.86 : 1,905.39 = 577.04 : x
  2. Step 2: Convert to fraction form
    1,269.86/1,905.39 = 577.04/x
  3. Step 3: Cross multiply
    1,269.86x = 1,905.39 × 577.04
  4. Step 4: Simplify right side
    1,269.86x = 1,099,476.72
  5. Step 5: Solve for x
    x = 1,099,476.72/1,269.86
  6. Step 6: Final answer
    x = 865.83

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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.