Home / 2,836.69-3,914.64-1,657.78

Finding the Fourth Proportional to 2,836.69, 3,914.64 and 1,657.78

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Solution

The fourth proportional to 2,836.69, 3,914.64 and 1,657.78 is: 2,287.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,836.69 : 3,914.64 = 1,657.78 : x
  2. Step 2: Convert to fraction form
    2,836.69/3,914.64 = 1,657.78/x
  3. Step 3: Cross multiply
    2,836.69x = 3,914.64 × 1,657.78
  4. Step 4: Simplify right side
    2,836.69x = 6,489,602.11
  5. Step 5: Solve for x
    x = 6,489,602.11/2,836.69
  6. Step 6: Final answer
    x = 2,287.74

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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.