Home / 3,890.56-5,368.52-2,212.16

Finding the Fourth Proportional to 3,890.56, 5,368.52 and 2,212.16

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Solution

The fourth proportional to 3,890.56, 5,368.52 and 2,212.16 is: 3,052.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,890.56 : 5,368.52 = 2,212.16 : x
  2. Step 2: Convert to fraction form
    3,890.56/5,368.52 = 2,212.16/x
  3. Step 3: Cross multiply
    3,890.56x = 5,368.52 × 2,212.16
  4. Step 4: Simplify right side
    3,890.56x = 11,876,025.20
  5. Step 5: Solve for x
    x = 11,876,025.20/3,890.56
  6. Step 6: Final answer
    x = 3,052.52

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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.