Home / 1,385.05-2,076.94-946.43

Finding the Fourth Proportional to 1,385.05, 2,076.94 and 946.43

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Solution

The fourth proportional to 1,385.05, 2,076.94 and 946.43 is: 1,419.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,385.05 : 2,076.94 = 946.43 : x
  2. Step 2: Convert to fraction form
    1,385.05/2,076.94 = 946.43/x
  3. Step 3: Cross multiply
    1,385.05x = 2,076.94 × 946.43
  4. Step 4: Simplify right side
    1,385.05x = 1,965,688.59
  5. Step 5: Solve for x
    x = 1,965,688.59/1,385.05
  6. Step 6: Final answer
    x = 1,419.22

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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.