Home / 2,657.73-3,985.68-1,272.63

Finding the Fourth Proportional to 2,657.73, 3,985.68 and 1,272.63

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Solution

The fourth proportional to 2,657.73, 3,985.68 and 1,272.63 is: 1,908.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,657.73 : 3,985.68 = 1,272.63 : x
  2. Step 2: Convert to fraction form
    2,657.73/3,985.68 = 1,272.63/x
  3. Step 3: Cross multiply
    2,657.73x = 3,985.68 × 1,272.63
  4. Step 4: Simplify right side
    2,657.73x = 5,072,295.94
  5. Step 5: Solve for x
    x = 5,072,295.94/2,657.73
  6. Step 6: Final answer
    x = 1,908.51

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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.