Home / 8,621.37-12,921.60-3,934.96

Finding the Fourth Proportional to 8,621.37, 12,921.60 and 3,934.96

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Solution

The fourth proportional to 8,621.37, 12,921.60 and 3,934.96 is: 5,897.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,621.37 : 12,921.60 = 3,934.96 : x
  2. Step 2: Convert to fraction form
    8,621.37/12,921.60 = 3,934.96/x
  3. Step 3: Cross multiply
    8,621.37x = 12,921.60 × 3,934.96
  4. Step 4: Simplify right side
    8,621.37x = 50,845,979.14
  5. Step 5: Solve for x
    x = 50,845,979.14/8,621.37
  6. Step 6: Final answer
    x = 5,897.67

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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.