Home / 3,956.28-5,463.36-2,780.16

Finding the Fourth Proportional to 3,956.28, 5,463.36 and 2,780.16

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Solution

The fourth proportional to 3,956.28, 5,463.36 and 2,780.16 is: 3,839.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,956.28 : 5,463.36 = 2,780.16 : x
  2. Step 2: Convert to fraction form
    3,956.28/5,463.36 = 2,780.16/x
  3. Step 3: Cross multiply
    3,956.28x = 5,463.36 × 2,780.16
  4. Step 4: Simplify right side
    3,956.28x = 15,189,014.94
  5. Step 5: Solve for x
    x = 15,189,014.94/3,956.28
  6. Step 6: Final answer
    x = 3,839.22

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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.