Home / 2,272.89-3,138.65-1,435.08

Finding the Fourth Proportional to 2,272.89, 3,138.65 and 1,435.08

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Solution

The fourth proportional to 2,272.89, 3,138.65 and 1,435.08 is: 1,981.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,272.89 : 3,138.65 = 1,435.08 : x
  2. Step 2: Convert to fraction form
    2,272.89/3,138.65 = 1,435.08/x
  3. Step 3: Cross multiply
    2,272.89x = 3,138.65 × 1,435.08
  4. Step 4: Simplify right side
    2,272.89x = 4,504,206.67
  5. Step 5: Solve for x
    x = 4,504,206.67/2,272.89
  6. Step 6: Final answer
    x = 1,981.71

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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.