Home / 5,638.23-8,454.68-1,687.97

Finding the Fourth Proportional to 5,638.23, 8,454.68 and 1,687.97

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Solution

The fourth proportional to 5,638.23, 8,454.68 and 1,687.97 is: 2,531.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,638.23 : 8,454.68 = 1,687.97 : x
  2. Step 2: Convert to fraction form
    5,638.23/8,454.68 = 1,687.97/x
  3. Step 3: Cross multiply
    5,638.23x = 8,454.68 × 1,687.97
  4. Step 4: Simplify right side
    5,638.23x = 14,271,208.15
  5. Step 5: Solve for x
    x = 14,271,208.15/5,638.23
  6. Step 6: Final answer
    x = 2,531.15

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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.