Home / 5,638.48-8,456.84-1,890.34

Finding the Fourth Proportional to 5,638.48, 8,456.84 and 1,890.34

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Solution

The fourth proportional to 5,638.48, 8,456.84 and 1,890.34 is: 2,835.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,638.48 : 8,456.84 = 1,890.34 : x
  2. Step 2: Convert to fraction form
    5,638.48/8,456.84 = 1,890.34/x
  3. Step 3: Cross multiply
    5,638.48x = 8,456.84 × 1,890.34
  4. Step 4: Simplify right side
    5,638.48x = 15,986,302.93
  5. Step 5: Solve for x
    x = 15,986,302.93/5,638.48
  6. Step 6: Final answer
    x = 2,835.21

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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.