Home / 2,577.88-3,863.64-1,189.28

Finding the Fourth Proportional to 2,577.88, 3,863.64 and 1,189.28

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Solution

The fourth proportional to 2,577.88, 3,863.64 and 1,189.28 is: 1,782.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,577.88 : 3,863.64 = 1,189.28 : x
  2. Step 2: Convert to fraction form
    2,577.88/3,863.64 = 1,189.28/x
  3. Step 3: Cross multiply
    2,577.88x = 3,863.64 × 1,189.28
  4. Step 4: Simplify right side
    2,577.88x = 4,594,959.44
  5. Step 5: Solve for x
    x = 4,594,959.44/2,577.88
  6. Step 6: Final answer
    x = 1,782.46

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1.5x scale

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.