Home / 2,577.42-3,866.40-1,278.54

Finding the Fourth Proportional to 2,577.42, 3,866.40 and 1,278.54

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Solution

The fourth proportional to 2,577.42, 3,866.40 and 1,278.54 is: 1,917.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,577.42 : 3,866.40 = 1,278.54 : x
  2. Step 2: Convert to fraction form
    2,577.42/3,866.40 = 1,278.54/x
  3. Step 3: Cross multiply
    2,577.42x = 3,866.40 × 1,278.54
  4. Step 4: Simplify right side
    2,577.42x = 4,943,347.06
  5. Step 5: Solve for x
    x = 4,943,347.06/2,577.42
  6. Step 6: Final answer
    x = 1,917.94

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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.