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Finding the Fourth Proportional to 5,473.89, 8,214.80 and 2,187.90

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Solution

The fourth proportional to 5,473.89, 8,214.80 and 2,187.90 is: 3,283.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,473.89 : 8,214.80 = 2,187.90 : x
  2. Step 2: Convert to fraction form
    5,473.89/8,214.80 = 2,187.90/x
  3. Step 3: Cross multiply
    5,473.89x = 8,214.80 × 2,187.90
  4. Step 4: Simplify right side
    5,473.89x = 17,973,149.98
  5. Step 5: Solve for x
    x = 17,973,149.98/5,473.89
  6. Step 6: Final answer
    x = 3,283.43

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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.