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Finding the Fourth Proportional to 5,680.60, 8,520.90 and 3,837.40

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Solution

The fourth proportional to 5,680.60, 8,520.90 and 3,837.40 is: 5,756.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,680.60 : 8,520.90 = 3,837.40 : x
  2. Step 2: Convert to fraction form
    5,680.60/8,520.90 = 3,837.40/x
  3. Step 3: Cross multiply
    5,680.60x = 8,520.90 × 3,837.40
  4. Step 4: Simplify right side
    5,680.60x = 32,698,101.66
  5. Step 5: Solve for x
    x = 32,698,101.66/5,680.60
  6. Step 6: Final answer
    x = 5,756.10

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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.