Home / 2,639.98-3,956.78-1,253.06

Finding the Fourth Proportional to 2,639.98, 3,956.78 and 1,253.06

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Solution

The fourth proportional to 2,639.98, 3,956.78 and 1,253.06 is: 1,878.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,639.98 : 3,956.78 = 1,253.06 : x
  2. Step 2: Convert to fraction form
    2,639.98/3,956.78 = 1,253.06/x
  3. Step 3: Cross multiply
    2,639.98x = 3,956.78 × 1,253.06
  4. Step 4: Simplify right side
    2,639.98x = 4,958,082.75
  5. Step 5: Solve for x
    x = 4,958,082.75/2,639.98
  6. Step 6: Final answer
    x = 1,878.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.