Home / 8,485.84-12,724.11-2,938.71

Finding the Fourth Proportional to 8,485.84, 12,724.11 and 2,938.71

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Solution

The fourth proportional to 8,485.84, 12,724.11 and 2,938.71 is: 4,406.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,485.84 : 12,724.11 = 2,938.71 : x
  2. Step 2: Convert to fraction form
    8,485.84/12,724.11 = 2,938.71/x
  3. Step 3: Cross multiply
    8,485.84x = 12,724.11 × 2,938.71
  4. Step 4: Simplify right side
    8,485.84x = 37,392,469.30
  5. Step 5: Solve for x
    x = 37,392,469.30/8,485.84
  6. Step 6: Final answer
    x = 4,406.46

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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.