Home / 2,577.11-3,866.85-1,278.54

Finding the Fourth Proportional to 2,577.11, 3,866.85 and 1,278.54

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Solution

The fourth proportional to 2,577.11, 3,866.85 and 1,278.54 is: 1,918.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,577.11 : 3,866.85 = 1,278.54 : x
  2. Step 2: Convert to fraction form
    2,577.11/3,866.85 = 1,278.54/x
  3. Step 3: Cross multiply
    2,577.11x = 3,866.85 × 1,278.54
  4. Step 4: Simplify right side
    2,577.11x = 4,943,922.40
  5. Step 5: Solve for x
    x = 4,943,922.40/2,577.11
  6. Step 6: Final answer
    x = 1,918.40

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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.