Home / 5,429.60-8,138.10-2,508.20

Finding the Fourth Proportional to 5,429.60, 8,138.10 and 2,508.20

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Solution

The fourth proportional to 5,429.60, 8,138.10 and 2,508.20 is: 3,759.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,429.60 : 8,138.10 = 2,508.20 : x
  2. Step 2: Convert to fraction form
    5,429.60/8,138.10 = 2,508.20/x
  3. Step 3: Cross multiply
    5,429.60x = 8,138.10 × 2,508.20
  4. Step 4: Simplify right side
    5,429.60x = 20,411,982.42
  5. Step 5: Solve for x
    x = 20,411,982.42/5,429.60
  6. Step 6: Final answer
    x = 3,759.39

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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.