Home / 2,239.29-3,091.76-1,400.40

Finding the Fourth Proportional to 2,239.29, 3,091.76 and 1,400.40

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Solution

The fourth proportional to 2,239.29, 3,091.76 and 1,400.40 is: 1,933.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,239.29 : 3,091.76 = 1,400.40 : x
  2. Step 2: Convert to fraction form
    2,239.29/3,091.76 = 1,400.40/x
  3. Step 3: Cross multiply
    2,239.29x = 3,091.76 × 1,400.40
  4. Step 4: Simplify right side
    2,239.29x = 4,329,698.95
  5. Step 5: Solve for x
    x = 4,329,698.95/2,239.29
  6. Step 6: Final answer
    x = 1,933.51

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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.