Home / 2,577.78-3,868.38-1,117.08

Finding the Fourth Proportional to 2,577.78, 3,868.38 and 1,117.08

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Solution

The fourth proportional to 2,577.78, 3,868.38 and 1,117.08 is: 1,676.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,577.78 : 3,868.38 = 1,117.08 : x
  2. Step 2: Convert to fraction form
    2,577.78/3,868.38 = 1,117.08/x
  3. Step 3: Cross multiply
    2,577.78x = 3,868.38 × 1,117.08
  4. Step 4: Simplify right side
    2,577.78x = 4,321,289.93
  5. Step 5: Solve for x
    x = 4,321,289.93/2,577.78
  6. Step 6: Final answer
    x = 1,676.36

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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.