Home / 1,938.04-2,675.64-1,276

Finding the Fourth Proportional to 1,938.04, 2,675.64 and 1,276

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Solution

The fourth proportional to 1,938.04, 2,675.64 and 1,276 is: 1,761.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,938.04 : 2,675.64 = 1,276 : x
  2. Step 2: Convert to fraction form
    1,938.04/2,675.64 = 1,276/x
  3. Step 3: Cross multiply
    1,938.04x = 2,675.64 × 1,276
  4. Step 4: Simplify right side
    1,938.04x = 3,414,116.64
  5. Step 5: Solve for x
    x = 3,414,116.64/1,938.04
  6. Step 6: Final answer
    x = 1,761.63

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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.