Home / 8,138.39-11,234.57-5,453.87

Finding the Fourth Proportional to 8,138.39, 11,234.57 and 5,453.87

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Solution

The fourth proportional to 8,138.39, 11,234.57 and 5,453.87 is: 7,528.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,138.39 : 11,234.57 = 5,453.87 : x
  2. Step 2: Convert to fraction form
    8,138.39/11,234.57 = 5,453.87/x
  3. Step 3: Cross multiply
    8,138.39x = 11,234.57 × 5,453.87
  4. Step 4: Simplify right side
    8,138.39x = 61,271,800.84
  5. Step 5: Solve for x
    x = 61,271,800.84/8,138.39
  6. Step 6: Final answer
    x = 7,528.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.