Home / 3,933.60-5,424.48-2,812.56

Finding the Fourth Proportional to 3,933.60, 5,424.48 and 2,812.56

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Solution

The fourth proportional to 3,933.60, 5,424.48 and 2,812.56 is: 3,878.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,933.60 : 5,424.48 = 2,812.56 : x
  2. Step 2: Convert to fraction form
    3,933.60/5,424.48 = 2,812.56/x
  3. Step 3: Cross multiply
    3,933.60x = 5,424.48 × 2,812.56
  4. Step 4: Simplify right side
    3,933.60x = 15,256,675.47
  5. Step 5: Solve for x
    x = 15,256,675.47/3,933.60
  6. Step 6: Final answer
    x = 3,878.55

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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.