Home / 5,257.14-7,885.71-2,138.84

Finding the Fourth Proportional to 5,257.14, 7,885.71 and 2,138.84

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Solution

The fourth proportional to 5,257.14, 7,885.71 and 2,138.84 is: 3,208.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,257.14 : 7,885.71 = 2,138.84 : x
  2. Step 2: Convert to fraction form
    5,257.14/7,885.71 = 2,138.84/x
  3. Step 3: Cross multiply
    5,257.14x = 7,885.71 × 2,138.84
  4. Step 4: Simplify right side
    5,257.14x = 16,866,271.98
  5. Step 5: Solve for x
    x = 16,866,271.98/5,257.14
  6. Step 6: Final answer
    x = 3,208.26

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1.5x scale

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.