Home / 1,939.59-2,677.90-1,277.57

Finding the Fourth Proportional to 1,939.59, 2,677.90 and 1,277.57

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Solution

The fourth proportional to 1,939.59, 2,677.90 and 1,277.57 is: 1,763.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,939.59 : 2,677.90 = 1,277.57 : x
  2. Step 2: Convert to fraction form
    1,939.59/2,677.90 = 1,277.57/x
  3. Step 3: Cross multiply
    1,939.59x = 2,677.90 × 1,277.57
  4. Step 4: Simplify right side
    1,939.59x = 3,421,207.90
  5. Step 5: Solve for x
    x = 3,421,207.90/1,939.59
  6. Step 6: Final answer
    x = 1,763.88

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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.