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Finding the Fourth Proportional to 10,903.94, 16,358.35 and 3,978.44

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Solution

The fourth proportional to 10,903.94, 16,358.35 and 3,978.44 is: 5,968.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,903.94 : 16,358.35 = 3,978.44 : x
  2. Step 2: Convert to fraction form
    10,903.94/16,358.35 = 3,978.44/x
  3. Step 3: Cross multiply
    10,903.94x = 16,358.35 × 3,978.44
  4. Step 4: Simplify right side
    10,903.94x = 65,080,713.97
  5. Step 5: Solve for x
    x = 65,080,713.97/10,903.94
  6. Step 6: Final answer
    x = 5,968.55

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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.