Home / 5,425.60-8,138.40-3,949.60

Finding the Fourth Proportional to 5,425.60, 8,138.40 and 3,949.60

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Solution

The fourth proportional to 5,425.60, 8,138.40 and 3,949.60 is: 5,924.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,425.60 : 8,138.40 = 3,949.60 : x
  2. Step 2: Convert to fraction form
    5,425.60/8,138.40 = 3,949.60/x
  3. Step 3: Cross multiply
    5,425.60x = 8,138.40 × 3,949.60
  4. Step 4: Simplify right side
    5,425.60x = 32,143,424.64
  5. Step 5: Solve for x
    x = 32,143,424.64/5,425.60
  6. Step 6: Final answer
    x = 5,924.40

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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.