Home / 3,877.36-5,812.40-1,927.72

Finding the Fourth Proportional to 3,877.36, 5,812.40 and 1,927.72

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Solution

The fourth proportional to 3,877.36, 5,812.40 and 1,927.72 is: 2,889.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,877.36 : 5,812.40 = 1,927.72 : x
  2. Step 2: Convert to fraction form
    3,877.36/5,812.40 = 1,927.72/x
  3. Step 3: Cross multiply
    3,877.36x = 5,812.40 × 1,927.72
  4. Step 4: Simplify right side
    3,877.36x = 11,204,679.73
  5. Step 5: Solve for x
    x = 11,204,679.73/3,877.36
  6. Step 6: Final answer
    x = 2,889.77

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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.