Home / 5,638.73-8,456.45-1,689.83

Finding the Fourth Proportional to 5,638.73, 8,456.45 and 1,689.83

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Solution

The fourth proportional to 5,638.73, 8,456.45 and 1,689.83 is: 2,534.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,638.73 : 8,456.45 = 1,689.83 : x
  2. Step 2: Convert to fraction form
    5,638.73/8,456.45 = 1,689.83/x
  3. Step 3: Cross multiply
    5,638.73x = 8,456.45 × 1,689.83
  4. Step 4: Simplify right side
    5,638.73x = 14,289,912.17
  5. Step 5: Solve for x
    x = 14,289,912.17/5,638.73
  6. Step 6: Final answer
    x = 2,534.25

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Double scale
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Similar ratio
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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.