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Finding the Fourth Proportional to 8,958.37, 12,362.57 and 4,979.49

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Solution

The fourth proportional to 8,958.37, 12,362.57 and 4,979.49 is: 6,871.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,958.37 : 12,362.57 = 4,979.49 : x
  2. Step 2: Convert to fraction form
    8,958.37/12,362.57 = 4,979.49/x
  3. Step 3: Cross multiply
    8,958.37x = 12,362.57 × 4,979.49
  4. Step 4: Simplify right side
    8,958.37x = 61,559,254.99
  5. Step 5: Solve for x
    x = 61,559,254.99/8,958.37
  6. Step 6: Final answer
    x = 6,871.71

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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.