Home / 3,890.14-5,369.28-2,212.50

Finding the Fourth Proportional to 3,890.14, 5,369.28 and 2,212.50

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Solution

The fourth proportional to 3,890.14, 5,369.28 and 2,212.50 is: 3,053.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,890.14 : 5,369.28 = 2,212.50 : x
  2. Step 2: Convert to fraction form
    3,890.14/5,369.28 = 2,212.50/x
  3. Step 3: Cross multiply
    3,890.14x = 5,369.28 × 2,212.50
  4. Step 4: Simplify right side
    3,890.14x = 11,879,532
  5. Step 5: Solve for x
    x = 11,879,532/3,890.14
  6. Step 6: Final answer
    x = 3,053.75

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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.