Home / 3,874.50-5,811.75-1,277.64

Finding the Fourth Proportional to 3,874.50, 5,811.75 and 1,277.64

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Solution

The fourth proportional to 3,874.50, 5,811.75 and 1,277.64 is: 1,916.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,874.50 : 5,811.75 = 1,277.64 : x
  2. Step 2: Convert to fraction form
    3,874.50/5,811.75 = 1,277.64/x
  3. Step 3: Cross multiply
    3,874.50x = 5,811.75 × 1,277.64
  4. Step 4: Simplify right side
    3,874.50x = 7,425,324.27
  5. Step 5: Solve for x
    x = 7,425,324.27/3,874.50
  6. Step 6: Final answer
    x = 1,916.46

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Half scale
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Double scale
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Similar ratio
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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.