Home / 3,981.52-5,973.12-1,384.36

Finding the Fourth Proportional to 3,981.52, 5,973.12 and 1,384.36

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Solution

The fourth proportional to 3,981.52, 5,973.12 and 1,384.36 is: 2,076.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,981.52 : 5,973.12 = 1,384.36 : x
  2. Step 2: Convert to fraction form
    3,981.52/5,973.12 = 1,384.36/x
  3. Step 3: Cross multiply
    3,981.52x = 5,973.12 × 1,384.36
  4. Step 4: Simplify right side
    3,981.52x = 8,268,948.40
  5. Step 5: Solve for x
    x = 8,268,948.40/3,981.52
  6. Step 6: Final answer
    x = 2,076.83

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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.