Home / 2,577.28-3,860.88-1,274.80

Finding the Fourth Proportional to 2,577.28, 3,860.88 and 1,274.80

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Solution

The fourth proportional to 2,577.28, 3,860.88 and 1,274.80 is: 1,909.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,577.28 : 3,860.88 = 1,274.80 : x
  2. Step 2: Convert to fraction form
    2,577.28/3,860.88 = 1,274.80/x
  3. Step 3: Cross multiply
    2,577.28x = 3,860.88 × 1,274.80
  4. Step 4: Simplify right side
    2,577.28x = 4,921,849.82
  5. Step 5: Solve for x
    x = 4,921,849.82/2,577.28
  6. Step 6: Final answer
    x = 1,909.71

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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.