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Finding the Fourth Proportional to 5,921.64, 8,880.14 and 2,221.86

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Solution

The fourth proportional to 5,921.64, 8,880.14 and 2,221.86 is: 3,331.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,921.64 : 8,880.14 = 2,221.86 : x
  2. Step 2: Convert to fraction form
    5,921.64/8,880.14 = 2,221.86/x
  3. Step 3: Cross multiply
    5,921.64x = 8,880.14 × 2,221.86
  4. Step 4: Simplify right side
    5,921.64x = 19,730,427.86
  5. Step 5: Solve for x
    x = 19,730,427.86/5,921.64
  6. Step 6: Final answer
    x = 3,331.92

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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.