Home / 1,400.50-1,933.77-1,107.28

Finding the Fourth Proportional to 1,400.50, 1,933.77 and 1,107.28

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Solution

The fourth proportional to 1,400.50, 1,933.77 and 1,107.28 is: 1,528.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,400.50 : 1,933.77 = 1,107.28 : x
  2. Step 2: Convert to fraction form
    1,400.50/1,933.77 = 1,107.28/x
  3. Step 3: Cross multiply
    1,400.50x = 1,933.77 × 1,107.28
  4. Step 4: Simplify right side
    1,400.50x = 2,141,224.85
  5. Step 5: Solve for x
    x = 2,141,224.85/1,400.50
  6. Step 6: Final answer
    x = 1,528.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.