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Finding the Fourth Proportional to 4,000.86, 5,491.80 and 3,548.88

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Solution

The fourth proportional to 4,000.86, 5,491.80 and 3,548.88 is: 4,871.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,000.86 : 5,491.80 = 3,548.88 : x
  2. Step 2: Convert to fraction form
    4,000.86/5,491.80 = 3,548.88/x
  3. Step 3: Cross multiply
    4,000.86x = 5,491.80 × 3,548.88
  4. Step 4: Simplify right side
    4,000.86x = 19,489,739.18
  5. Step 5: Solve for x
    x = 19,489,739.18/4,000.86
  6. Step 6: Final answer
    x = 4,871.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.