Home / 2,577.79-3,865.39-1,261.64

Finding the Fourth Proportional to 2,577.79, 3,865.39 and 1,261.64

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Solution

The fourth proportional to 2,577.79, 3,865.39 and 1,261.64 is: 1,891.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,577.79 : 3,865.39 = 1,261.64 : x
  2. Step 2: Convert to fraction form
    2,577.79/3,865.39 = 1,261.64/x
  3. Step 3: Cross multiply
    2,577.79x = 3,865.39 × 1,261.64
  4. Step 4: Simplify right side
    2,577.79x = 4,876,737.15
  5. Step 5: Solve for x
    x = 4,876,737.15/2,577.79
  6. Step 6: Final answer
    x = 1,891.83

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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.