Home / 3,881.72-5,357.28-2,555.84

Finding the Fourth Proportional to 3,881.72, 5,357.28 and 2,555.84

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Solution

The fourth proportional to 3,881.72, 5,357.28 and 2,555.84 is: 3,527.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,881.72 : 5,357.28 = 2,555.84 : x
  2. Step 2: Convert to fraction form
    3,881.72/5,357.28 = 2,555.84/x
  3. Step 3: Cross multiply
    3,881.72x = 5,357.28 × 2,555.84
  4. Step 4: Simplify right side
    3,881.72x = 13,692,350.52
  5. Step 5: Solve for x
    x = 13,692,350.52/3,881.72
  6. Step 6: Final answer
    x = 3,527.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.