Home / 3,824.64-5,278.08-2,986.32

Finding the Fourth Proportional to 3,824.64, 5,278.08 and 2,986.32

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Solution

The fourth proportional to 3,824.64, 5,278.08 and 2,986.32 is: 4,121.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,824.64 : 5,278.08 = 2,986.32 : x
  2. Step 2: Convert to fraction form
    3,824.64/5,278.08 = 2,986.32/x
  3. Step 3: Cross multiply
    3,824.64x = 5,278.08 × 2,986.32
  4. Step 4: Simplify right side
    3,824.64x = 15,762,035.87
  5. Step 5: Solve for x
    x = 15,762,035.87/3,824.64
  6. Step 6: Final answer
    x = 4,121.18

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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.