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Finding the Fourth Proportional to 2,866.42, 3,956.06 and 2,072.32

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Solution

The fourth proportional to 2,866.42, 3,956.06 and 2,072.32 is: 2,860.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,866.42 : 3,956.06 = 2,072.32 : x
  2. Step 2: Convert to fraction form
    2,866.42/3,956.06 = 2,072.32/x
  3. Step 3: Cross multiply
    2,866.42x = 3,956.06 × 2,072.32
  4. Step 4: Simplify right side
    2,866.42x = 8,198,222.26
  5. Step 5: Solve for x
    x = 8,198,222.26/2,866.42
  6. Step 6: Final answer
    x = 2,860.09

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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.