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Finding the Fourth Proportional to 3,889.64, 5,838.30 and 2,353.64

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Solution

The fourth proportional to 3,889.64, 5,838.30 and 2,353.64 is: 3,532.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,889.64 : 5,838.30 = 2,353.64 : x
  2. Step 2: Convert to fraction form
    3,889.64/5,838.30 = 2,353.64/x
  3. Step 3: Cross multiply
    3,889.64x = 5,838.30 × 2,353.64
  4. Step 4: Simplify right side
    3,889.64x = 13,741,256.41
  5. Step 5: Solve for x
    x = 13,741,256.41/3,889.64
  6. Step 6: Final answer
    x = 3,532.78

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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.