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Finding the Fourth Proportional to 5,757.90, 8,636.85 and 1,862.21

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Solution

The fourth proportional to 5,757.90, 8,636.85 and 1,862.21 is: 2,793.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,757.90 : 8,636.85 = 1,862.21 : x
  2. Step 2: Convert to fraction form
    5,757.90/8,636.85 = 1,862.21/x
  3. Step 3: Cross multiply
    5,757.90x = 8,636.85 × 1,862.21
  4. Step 4: Simplify right side
    5,757.90x = 16,083,585.25
  5. Step 5: Solve for x
    x = 16,083,585.25/5,757.90
  6. Step 6: Final answer
    x = 2,793.31

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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.