Home / 3,935.79-5,429.63-2,256.86

Finding the Fourth Proportional to 3,935.79, 5,429.63 and 2,256.86

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Solution

The fourth proportional to 3,935.79, 5,429.63 and 2,256.86 is: 3,113.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,935.79 : 5,429.63 = 2,256.86 : x
  2. Step 2: Convert to fraction form
    3,935.79/5,429.63 = 2,256.86/x
  3. Step 3: Cross multiply
    3,935.79x = 5,429.63 × 2,256.86
  4. Step 4: Simplify right side
    3,935.79x = 12,253,933.98
  5. Step 5: Solve for x
    x = 12,253,933.98/3,935.79
  6. Step 6: Final answer
    x = 3,113.46

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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.