Home / 2,235.72-3,087.39-1,440.43

Finding the Fourth Proportional to 2,235.72, 3,087.39 and 1,440.43

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Solution

The fourth proportional to 2,235.72, 3,087.39 and 1,440.43 is: 1,989.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,235.72 : 3,087.39 = 1,440.43 : x
  2. Step 2: Convert to fraction form
    2,235.72/3,087.39 = 1,440.43/x
  3. Step 3: Cross multiply
    2,235.72x = 3,087.39 × 1,440.43
  4. Step 4: Simplify right side
    2,235.72x = 4,447,169.18
  5. Step 5: Solve for x
    x = 4,447,169.18/2,235.72
  6. Step 6: Final answer
    x = 1,989.14

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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.